CSDN-Markdown语法集锦_呆萌程小王的博客-程序员宅基地

技术标签: MarkDown  

<div id="article_content" class="article_content">
        <div class="markdown_views"><h1 id="前言"><strong>前言:</strong></h1>


<p>使用Markdown近一个来月。越来越认为不舒爽。 <br>
改字体、改字号、改颜色、改样式,全不会!想加个数学公式。得,仅仅会截图。把图片传上去了还不会控制大小。也不会控制文字与图片的排版,写出来的博客怎么看都还是有点丑!今天真忍不住了,这内容不咋地也就算了,排版也给弄美丽点吧!</p>


<p>今晚要搜遍网上各种关于Markdown语法的文章,作个总结! <br>
</p><p> <br>
</p><p></p>


<h1 id="表格"><strong>表格:</strong></h1>


<pre class="prettyprint"><code class=" hljs haml">标题1|标题2|标题3
 -<span class="ruby">--<span class="hljs-symbol">:|</span><span class="hljs-symbol">:-----</span><span class="hljs-symbol">:|</span><span class="hljs-symbol">:--</span>
</span> abc|上面的虚线可用多个减号取代|efg
 123|英文冒号能够调节居左、中、右|456</code></pre>


<p>效果:</p>


<table>
<thead>
<tr>
  <th align="right">标题1</th>
  <th align="center">标题2</th>
  <th align="left">标题3</th>
</tr>
</thead>
<tbody><tr>
  <td align="right">abc</td>
  <td align="center">上面的虚线可用多个减号取代</td>
  <td align="left">efg</td>
</tr>
<tr>
  <td align="right">123</td>
  <td align="center">英文冒号能够调节居左、中、右</td>
  <td align="left">456</td>
</tr>
</tbody></table>




<p></p><p> <br>
</p><p></p>


<div id="footer"></div>


<h1 id="数学公式mathjax"><strong>数学公式(MathJax):</strong></h1>


<h2 id="mathjax语法"><strong>MathJax语法:</strong></h2>


<h3 id="希腊字母">希腊字母:</h3>


<table>
<thead>
<tr>
  <th align="left">字母</th>
  <th align="left">语法</th>
  <th align="left"></th>
  <th align="left">字母</th>
  <th align="left">语法</th>
</tr>
</thead>
<tbody><tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-283-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1573" style="width: 0.978em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1574"><span class="mi" id="MathJax-Span-1575" style="font-family: MathJax_Math-italic;">A</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">A</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-284-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1576" style="width: 0.816em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.653em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1577"><span class="mi" id="MathJax-Span-1578" style="font-family: MathJax_Math-italic;">α</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.67em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\alhpa</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-285-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1579" style="width: 0.978em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1580"><span class="mi" id="MathJax-Span-1581" style="font-family: MathJax_Math-italic;">B</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">B</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-286-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1582" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1583"><span class="mi" id="MathJax-Span-1584" style="font-family: MathJax_Math-italic;">β<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.27em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td align="left">\beta</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-287-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1585" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1586"><span class="mi" id="MathJax-Span-1587" style="font-family: MathJax_Main;">Γ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\Gamma</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-288-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1588" style="width: 0.707em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.545em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1589"><span class="mi" id="MathJax-Span-1590" style="font-family: MathJax_Math-italic;">γ<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td align="left">\gamma</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-289-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1591" style="width: 1.033em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.816em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1592"><span class="mi" id="MathJax-Span-1593" style="font-family: MathJax_Main;">Δ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\Delta</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-290-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1594" style="width: 0.599em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.491em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1595"><span class="mi" id="MathJax-Span-1596" style="font-family: MathJax_Math-italic;">δ<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\delta</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-291-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1597" style="width: 0.978em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1598"><span class="mi" id="MathJax-Span-1599" style="font-family: MathJax_Math-italic;">E<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">E</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-292-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1600" style="width: 0.491em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.382em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1601"><span class="mi" id="MathJax-Span-1602" style="font-family: MathJax_Math-italic;">ϵ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.67em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\epsilon</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-293-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1603" style="width: 0.978em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1604"><span class="mi" id="MathJax-Span-1605" style="font-family: MathJax_Math-italic;">Z<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">Z</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-294-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1606" style="width: 0.707em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.545em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1607"><span class="mi" id="MathJax-Span-1608" style="font-family: MathJax_Math-italic;">ζ<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.27em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td align="left">\zeta</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-295-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1609" style="width: 1.141em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.924em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1610"><span class="mi" id="MathJax-Span-1611" style="font-family: MathJax_Math-italic;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">H</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-296-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1612" style="width: 0.707em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.545em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1613"><span class="mi" id="MathJax-Span-1614" style="font-family: MathJax_Math-italic;">η<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td align="left">\eta</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-297-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1615" style="width: 0.978em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1616"><span class="mi" id="MathJax-Span-1617" style="font-family: MathJax_Main;">Θ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\Theta</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-298-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1618" style="width: 0.545em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.436em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1619"><span class="mi" id="MathJax-Span-1620" style="font-family: MathJax_Math-italic;">θ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\theta</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-299-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1621" style="width: 0.707em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.545em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1622"><span class="mi" id="MathJax-Span-1623" style="font-family: MathJax_Math-italic;">I<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">I</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-300-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1624" style="width: 0.436em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.328em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1625"><span class="mi" id="MathJax-Span-1626" style="font-family: MathJax_Math-italic;">ι</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.67em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\iota</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-301-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1627" style="width: 1.141em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.924em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1628"><span class="mi" id="MathJax-Span-1629" style="font-family: MathJax_Math-italic;">K<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">K</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-302-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1630" style="width: 0.707em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.545em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1631"><span class="mi" id="MathJax-Span-1632" style="font-family: MathJax_Math-italic;">κ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.67em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\kappa</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-303-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1633" style="width: 0.816em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.653em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1634"><span class="mi" id="MathJax-Span-1635" style="font-family: MathJax_Main;">Λ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\Lambda</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-304-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1636" style="width: 0.707em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.545em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1637"><span class="mi" id="MathJax-Span-1638" style="font-family: MathJax_Math-italic;">λ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\lambda</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-305-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1639" style="width: 1.304em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.033em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1640"><span class="mi" id="MathJax-Span-1641" style="font-family: MathJax_Math-italic;">M<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">M</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-306-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1642" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1643"><span class="mi" id="MathJax-Span-1644" style="font-family: MathJax_Math-italic;">μ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td align="left">\mu</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-307-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1645" style="width: 1.141em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.924em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1646"><span class="mi" id="MathJax-Span-1647" style="font-family: MathJax_Math-italic;">N<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">N</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-308-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1648" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1649"><span class="mi" id="MathJax-Span-1650" style="font-family: MathJax_Math-italic;">ν<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.67em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\nu</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-309-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1651" style="width: 0.816em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.653em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1652"><span class="mi" id="MathJax-Span-1653" style="font-family: MathJax_Main;">Ξ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\Xi</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-310-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1654" style="width: 0.599em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.491em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1655"><span class="mi" id="MathJax-Span-1656" style="font-family: MathJax_Math-italic;">ξ<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.27em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td align="left">\xi</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-311-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1657" style="width: 0.978em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1658"><span class="mi" id="MathJax-Span-1659" style="font-family: MathJax_Math-italic;">O</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">O</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-312-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1660" style="width: 0.599em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.491em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1661"><span class="mi" id="MathJax-Span-1662" style="font-family: MathJax_Math-italic;">ο</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.67em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\omicron</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-313-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1663" style="width: 0.978em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1664"><span class="mi" id="MathJax-Span-1665" style="font-family: MathJax_Main;">Π</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\Pi</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-314-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1666" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1667"><span class="mi" id="MathJax-Span-1668" style="font-family: MathJax_Math-italic;">π<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.67em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\pi</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-315-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1669" style="width: 1.033em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.816em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1670"><span class="mi" id="MathJax-Span-1671" style="font-family: MathJax_Math-italic;">P<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">P</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-316-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1672" style="width: 0.599em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.491em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1673"><span class="mi" id="MathJax-Span-1674" style="font-family: MathJax_Math-italic;">ρ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td align="left">\rho</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-317-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1675" style="width: 0.87em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.707em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1676"><span class="mi" id="MathJax-Span-1677" style="font-family: MathJax_Main;">Σ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\Sigma</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-318-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1678" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1679"><span class="mi" id="MathJax-Span-1680" style="font-family: MathJax_Math-italic;">σ<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.67em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\sigma</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-319-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1681" style="width: 0.978em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1682"><span class="mi" id="MathJax-Span-1683" style="font-family: MathJax_Math-italic;">T<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">T</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-320-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1684" style="width: 0.707em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.545em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1685"><span class="mi" id="MathJax-Span-1686" style="font-family: MathJax_Math-italic;">τ<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.67em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\tau</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-321-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1687" style="width: 0.978em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1688"><span class="mi" id="MathJax-Span-1689" style="font-family: MathJax_Main;">Υ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\Upsilon</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-322-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1690" style="width: 0.707em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.545em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1691"><span class="mi" id="MathJax-Span-1692" style="font-family: MathJax_Math-italic;">υ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.67em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\upsilon</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-323-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1693" style="width: 0.87em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.707em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1694"><span class="mi" id="MathJax-Span-1695" style="font-family: MathJax_Main;">Φ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\Phi</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-324-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1696" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1697"><span class="mi" id="MathJax-Span-1698" style="font-family: MathJax_Math-italic;">ϕ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.27em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td align="left">\phi</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-325-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1699" style="width: 1.087em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.87em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1700"><span class="mi" id="MathJax-Span-1701" style="font-family: MathJax_Math-italic;">X<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">X</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-326-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1702" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1703"><span class="mi" id="MathJax-Span-1704" style="font-family: MathJax_Math-italic;">χ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td align="left">\chi</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-327-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1705" style="width: 0.978em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1706"><span class="mi" id="MathJax-Span-1707" style="font-family: MathJax_Main;">Ψ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\Psi</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-328-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1708" style="width: 0.816em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.653em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1709"><span class="mi" id="MathJax-Span-1710" style="font-family: MathJax_Math-italic;">ψ</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.27em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td align="left">\psi</td>
</tr>
<tr>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-329-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1711" style="width: 0.87em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.707em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1712"><span class="mi" id="MathJax-Span-1713" style="font-family: MathJax_Main;">Ω</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">Omega</td>
  <td align="left"></td>
  <td align="left"><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-330-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-1714" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-1715"><span class="mi" id="MathJax-Span-1716" style="font-family: MathJax_Math-italic;">ω</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.67em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td align="left">\omega</td>
</tr>
</tbody></table>




<h3 id="数学符号">数学符号:</h3>


<table>
<thead>
<tr>
  <th>运算符</th>
  <th>说明</th>
  <th>实例</th>
  <th>代码</th>
</tr>
</thead>
<tbody><tr>
  <td>+</td>
  <td>加</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-499-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-2998" style="width: 2.821em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.52em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-2999"><span class="mi" id="MathJax-Span-3000" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3001" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mi" id="MathJax-Span-3002" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.137em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x + y <span>$</span></td>
</tr>
<tr>
  <td>-</td>
  <td>减</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-500-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3003" style="width: 2.821em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3004"><span class="mi" id="MathJax-Span-3005" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3006" style="font-family: MathJax_Main; padding-left: 0.22em;">−</span><span class="mi" id="MathJax-Span-3007" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x - y <span>$</span></td>
</tr>
<tr>
  <td>\times</td>
  <td>乘</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-501-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3008" style="width: 2.821em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.629em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3009"><span class="mi" id="MathJax-Span-3010" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3011" style="font-family: MathJax_Main; padding-left: 0.22em;">×</span><span class="mi" id="MathJax-Span-3012" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \times y <span>$</span></td>
</tr>
<tr>
  <td>\cdot</td>
  <td>乘</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-502-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3013" style="width: 2.225em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.791em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3014"><span class="mi" id="MathJax-Span-3015" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3016" style="font-family: MathJax_Main; padding-left: 0.22em;">⋅</span><span class="mi" id="MathJax-Span-3017" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \cdot y <span>$</span></td>
</tr>
<tr>
  <td>\ast</td>
  <td>乘</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-503-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3018" style="width: 2.496em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.008em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.629em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3019"><span class="mi" id="MathJax-Span-3020" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3021" style="font-family: MathJax_Main; padding-left: 0.22em;">∗</span><span class="mi" id="MathJax-Span-3022" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \ast y <span>$</span></td>
</tr>
<tr>
  <td>\div</td>
  <td>除</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-504-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3023" style="width: 2.821em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.575em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3024"><span class="mi" id="MathJax-Span-3025" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3026" style="font-family: MathJax_Main; padding-left: 0.22em;">÷</span><span class="mi" id="MathJax-Span-3027" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \div y <span>$</span></td>
</tr>
<tr>
  <td>\frac</td>
  <td>分数</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-505-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3028" style="width: 0.978em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.358em 1000.003em 2.93em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3029"><span class="mfrac" id="MathJax-Span-3030"><span style="display: inline-block; position: relative; width: 0.491em; height: 0px; margin-right: 0.111em; margin-left: 0.111em;"><span style="position: absolute; clip: rect(1.791em 1000.003em 2.442em -0.485em); top: -2.707em; left: 50%; margin-left: -0.16em;"><span class="mi" id="MathJax-Span-3031" style="font-size: 70.7%; font-family: MathJax_Math-italic;">x</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.791em 1000.003em 2.604em -0.485em); top: -1.949em; left: 50%; margin-left: -0.16em;"><span class="mi" id="MathJax-Span-3032" style="font-size: 70.7%; font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(0.87em 1000.003em 1.249em -0.485em); top: -1.298em; left: 0.003em;"><span style="border-left-width: 0.491em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.25px; vertical-align: 0.003em;"></span><span style="display: inline-block; width: 0px; height: 1.087em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.67em; vertical-align: -0.663em;"></span></span></nobr></span></td>
  <td><span>$</span> \frac{x}{y} <span>$</span></td>
</tr>
<tr>
  <td>^</td>
  <td>上标</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-506-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3033" style="width: 1.304em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.033em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3034"><span class="msubsup" id="MathJax-Span-3035"><span style="display: inline-block; position: relative; width: 0.978em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3036" style="font-family: MathJax_Math-italic;">x</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.653em; left: 0.545em;"><span class="mi" id="MathJax-Span-3037" style="font-size: 70.7%; font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td><span>$</span> x ^ y <span>$</span></td>
</tr>
<tr>
  <td>_</td>
  <td>下标</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-507-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3038" style="width: 1.304em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.033em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.713em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3039"><span class="msubsup" id="MathJax-Span-3040"><span style="display: inline-block; position: relative; width: 0.978em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3041" style="font-family: MathJax_Math-italic;">x</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.111em; left: 0.545em;"><span class="mi" id="MathJax-Span-3042" style="font-size: 70.7%; font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.397em;"></span></span></nobr></span></td>
  <td><span>$</span> x _ y <span>$</span></td>
</tr>
<tr>
  <td>\sqrt</td>
  <td>开二次方</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-508-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3043" style="width: 1.737em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.412em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.713em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3044"><span class="msqrt" id="MathJax-Span-3045"><span style="display: inline-block; position: relative; width: 1.358em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.816em;"><span class="mrow" id="MathJax-Span-3046"><span class="mi" id="MathJax-Span-3047" style="font-family: MathJax_Math-italic;">x</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(0.924em 1000.003em 1.304em -0.485em); top: -1.786em; left: 0.816em;"><span style="border-left-width: 0.545em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.25px; vertical-align: -0.051em;"></span><span style="display: inline-block; width: 0px; height: 1.087em;"></span></span><span style="position: absolute; clip: rect(3.038em 1000.003em 4.393em -0.431em); top: -3.954em; left: 0.003em;"><span style="font-family: MathJax_Main;">√</span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.337em; vertical-align: -0.397em;"></span></span></nobr></span></td>
  <td><span>$</span> \sqrt x <span>$</span></td>
</tr>
<tr>
  <td>\sqrt</td>
  <td>开方</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-509-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3048" style="width: 7.374em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.965em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.249em 1000.003em 2.767em -0.377em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3049"><span class="mroot" id="MathJax-Span-3050"><span style="display: inline-block; position: relative; width: 5.911em; height: 0px;"><span style="position: absolute; clip: rect(1.358em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.978em;"><span class="mrow" id="MathJax-Span-3051"><span class="msubsup" id="MathJax-Span-3052"><span style="display: inline-block; position: relative; width: 1.033em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3053" style="font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.545em; left: 0.599em;"><span class="mn" id="MathJax-Span-3054" style="font-size: 70.7%; font-family: MathJax_Main;">4</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="mo" id="MathJax-Span-3055" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mn" id="MathJax-Span-3056" style="font-family: MathJax_Main; padding-left: 0.22em;">3</span><span class="mi" id="MathJax-Span-3057" style="font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-3058" style="font-family: MathJax_Main; padding-left: 0.22em;">−</span><span class="mn" id="MathJax-Span-3059" style="font-family: MathJax_Main; padding-left: 0.22em;">1</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(3.58em 1000.003em 4.068em -0.485em); top: -4.604em; left: 0.978em;"><span style="display: inline-block; position: relative; width: 4.935em; height: 0px;"><span style="position: absolute; font-family: MathJax_Main; top: -4.008em; left: -0.106em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; font-family: MathJax_Main; top: -4.008em; left: 4.285em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 0.436em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 0.978em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 1.52em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 2.062em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 2.604em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 3.146em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 3.743em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; clip: rect(2.984em 1000.003em 4.501em -0.377em); top: -4.062em; left: 0.003em;"><span style="font-family: MathJax_Size1;">√</span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; clip: rect(1.9em 1000.003em 2.442em -0.485em); top: -2.707em; left: 0.274em;"><span class="mi" id="MathJax-Span-3060" style="font-size: 50%; font-family: MathJax_Math-italic;">x</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.603em; vertical-align: -0.463em;"></span></span></nobr></span></td>
  <td><span>$</span> \sqrt[x]{y^4+3y-1} <span>$</span></td>
</tr>
<tr>
  <td>\lceil 和 \rceil</td>
  <td>上取整</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-510-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3061" style="width: 2.008em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.629em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.249em 1000.003em 2.821em -0.322em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3062"><span class="mo" id="MathJax-Span-3063" style="font-family: MathJax_Main;">⌈</span><span class="mfrac" id="MathJax-Span-3064"><span style="display: inline-block; position: relative; width: 0.491em; height: 0px; margin-right: 0.111em; margin-left: 0.111em;"><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.707em; left: 50%; margin-left: -0.16em;"><span class="mn" id="MathJax-Span-3065" style="font-size: 70.7%; font-family: MathJax_Main;">1</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -1.894em; left: 50%; margin-left: -0.16em;"><span class="mn" id="MathJax-Span-3066" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(0.87em 1000.003em 1.249em -0.485em); top: -1.298em; left: 0.003em;"><span style="border-left-width: 0.491em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.25px; vertical-align: 0.003em;"></span><span style="display: inline-block; width: 0px; height: 1.087em;"></span></span></span></span><span class="mo" id="MathJax-Span-3067" style="font-family: MathJax_Main;">⌉</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.67em; vertical-align: -0.53em;"></span></span></nobr></span></td>
  <td><span>$</span> \lceil\frac12\rceil <span>$</span></td>
</tr>
<tr>
  <td>\lfloor 和 \rfloor</td>
  <td>下取整</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-511-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3068" style="width: 2.008em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.629em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.249em 1000.003em 2.821em -0.322em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3069"><span class="mo" id="MathJax-Span-3070" style="font-family: MathJax_Main;">⌊</span><span class="mfrac" id="MathJax-Span-3071"><span style="display: inline-block; position: relative; width: 0.491em; height: 0px; margin-right: 0.111em; margin-left: 0.111em;"><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.707em; left: 50%; margin-left: -0.16em;"><span class="mn" id="MathJax-Span-3072" style="font-size: 70.7%; font-family: MathJax_Main;">1</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -1.894em; left: 50%; margin-left: -0.16em;"><span class="mn" id="MathJax-Span-3073" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(0.87em 1000.003em 1.249em -0.485em); top: -1.298em; left: 0.003em;"><span style="border-left-width: 0.491em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.25px; vertical-align: 0.003em;"></span><span style="display: inline-block; width: 0px; height: 1.087em;"></span></span></span></span><span class="mo" id="MathJax-Span-3074" style="font-family: MathJax_Main;">⌋</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.67em; vertical-align: -0.53em;"></span></span></nobr></span></td>
  <td><span>$</span> \lfloor\frac12\rfloor <span>$</span></td>
</tr>
<tr>
  <td>\pm</td>
  <td>加减</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-512-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3075" style="width: 2.821em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3076"><span class="mi" id="MathJax-Span-3077" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3078" style="font-family: MathJax_Main; padding-left: 0.22em;">±</span><span class="mi" id="MathJax-Span-3079" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.203em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \pm y <span>$</span></td>
</tr>
<tr>
  <td>\mp</td>
  <td>减加</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-513-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3080" style="width: 2.821em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.629em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3081"><span class="mi" id="MathJax-Span-3082" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3083" style="font-family: MathJax_Main; padding-left: 0.22em;">∓</span><span class="mi" id="MathJax-Span-3084" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \mp y <span>$</span></td>
</tr>
<tr>
  <td>=</td>
  <td>等于</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-514-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3085" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3086"><span class="mi" id="MathJax-Span-3087" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3088" style="font-family: MathJax_Main; padding-left: 0.274em;">=</span><span class="mi" id="MathJax-Span-3089" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x = y <span>$</span></td>
</tr>
<tr>
  <td>\leq</td>
  <td>小于等于</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-515-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3090" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3091"><span class="mi" id="MathJax-Span-3092" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3093" style="font-family: MathJax_Main; padding-left: 0.274em;">≤</span><span class="mi" id="MathJax-Span-3094" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.203em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \leq y <span>$</span></td>
</tr>
<tr>
  <td>\geq</td>
  <td>大于等于</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-516-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3095" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3096"><span class="mi" id="MathJax-Span-3097" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3098" style="font-family: MathJax_Main; padding-left: 0.274em;">≥</span><span class="mi" id="MathJax-Span-3099" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.203em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \geq y <span>$</span></td>
</tr>
<tr>
  <td>\ngeq</td>
  <td>不大于等于</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-517-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3100" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.93em -0.431em); top: -2.436em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3101"><span class="mi" id="MathJax-Span-3102" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3103" style="font-family: MathJax_AMS; padding-left: 0.274em;">≱</span><span class="mi" id="MathJax-Span-3104" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.442em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.47em; vertical-align: -0.463em;"></span></span></nobr></span></td>
  <td><span>$</span> x \ngeq y <span>$</span></td>
</tr>
<tr>
  <td>\not\geq</td>
  <td>不大于等于</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-518-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3105" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.93em -0.431em); top: -2.436em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3106"><span class="mi" id="MathJax-Span-3107" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3108" style="font-family: MathJax_AMS; padding-left: 0.274em;">≱</span><span class="mi" id="MathJax-Span-3109" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.442em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.47em; vertical-align: -0.463em;"></span></span></nobr></span></td>
  <td><span>$</span> x \not\geq y <span>$</span></td>
</tr>
<tr>
  <td>\neq</td>
  <td>不等于</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-519-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3110" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3111"><span class="mi" id="MathJax-Span-3112" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3113" style="font-family: MathJax_Main; padding-left: 0.274em;">≠</span><span class="mi" id="MathJax-Span-3114" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.27em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \neq y <span>$</span></td>
</tr>
<tr>
  <td>\approx</td>
  <td>约等于</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-520-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3115" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.629em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3116"><span class="mi" id="MathJax-Span-3117" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3118" style="font-family: MathJax_Main; padding-left: 0.274em;">≈</span><span class="mi" id="MathJax-Span-3119" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \approx y <span>$</span></td>
</tr>
<tr>
  <td>\equiv</td>
  <td>恒等于</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-521-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3120" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.629em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3121"><span class="mi" id="MathJax-Span-3122" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3123" style="font-family: MathJax_Main; padding-left: 0.274em;">≡</span><span class="mi" id="MathJax-Span-3124" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 0.937em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \equiv y <span>$</span></td>
</tr>
<tr>
  <td>\bigodot</td>
  <td>定义运算符</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-522-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3125" style="width: 8.079em; display: inline-block;"><span style="display: inline-block; position: relative; width: 6.561em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.713em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3126"><span class="mi" id="MathJax-Span-3127" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3128" style="font-family: MathJax_Size1; vertical-align: 0.003em; padding-left: 0.165em;">⨀</span><span class="mi" id="MathJax-Span-3129" style="font-family: MathJax_Math-italic; padding-left: 0.165em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-3130" style="font-family: MathJax_Main; padding-left: 0.274em;">=</span><span class="mi" id="MathJax-Span-3131" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">x</span><span class="mo" id="MathJax-Span-3132" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="msubsup" id="MathJax-Span-3133" style="padding-left: 0.22em;"><span style="display: inline-block; position: relative; width: 1.033em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3134" style="font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.653em; left: 0.599em;"><span class="mn" id="MathJax-Span-3135" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.47em; vertical-align: -0.397em;"></span></span></nobr></span></td>
  <td><span>$</span> x \bigodot y=x+y^2 <span>$</span></td>
</tr>
<tr>
  <td>\bigotimes</td>
  <td>定义运算符</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-523-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3136" style="width: 8.079em; display: inline-block;"><span style="display: inline-block; position: relative; width: 6.561em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.713em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3137"><span class="mi" id="MathJax-Span-3138" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3139" style="font-family: MathJax_Size1; vertical-align: 0.003em; padding-left: 0.165em;">⨂</span><span class="mi" id="MathJax-Span-3140" style="font-family: MathJax_Math-italic; padding-left: 0.165em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-3141" style="font-family: MathJax_Main; padding-left: 0.274em;">=</span><span class="mi" id="MathJax-Span-3142" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">x</span><span class="mo" id="MathJax-Span-3143" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="msubsup" id="MathJax-Span-3144" style="padding-left: 0.22em;"><span style="display: inline-block; position: relative; width: 1.033em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3145" style="font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.653em; left: 0.599em;"><span class="mn" id="MathJax-Span-3146" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.47em; vertical-align: -0.397em;"></span></span></nobr></span></td>
  <td><span>$</span> x \bigotimes y=x+y^2 <span>$</span></td>
</tr>
<tr>
  <td>\in</td>
  <td>属于</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-524-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3147" style="width: 2.821em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.575em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3148"><span class="mi" id="MathJax-Span-3149" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3150" style="font-family: MathJax_Main; padding-left: 0.274em;">∈</span><span class="mi" id="MathJax-Span-3151" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \in y <span>$</span></td>
</tr>
<tr>
  <td>\notin</td>
  <td>不属于</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-525-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3152" style="width: 2.821em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3153"><span class="mi" id="MathJax-Span-3154" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3155" style="font-family: MathJax_Main; padding-left: 0.274em;">∉</span><span class="mi" id="MathJax-Span-3156" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.27em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \notin y <span>$</span></td>
</tr>
<tr>
  <td>\subset</td>
  <td>子集</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-526-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3157" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.575em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3158"><span class="mi" id="MathJax-Span-3159" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3160" style="font-family: MathJax_Main; padding-left: 0.274em;">⊂</span><span class="mi" id="MathJax-Span-3161" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \subset y <span>$</span></td>
</tr>
<tr>
  <td>\not\subset</td>
  <td>非子集</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-527-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3162" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3163"><span class="mi" id="MathJax-Span-3164" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3165" style="font-family: MathJax_Main; padding-left: 0.274em;">⊄</span><span class="mi" id="MathJax-Span-3166" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.27em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \not\subset y <span>$</span></td>
</tr>
<tr>
  <td>\subseteq</td>
  <td>子集</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-528-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3167" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3168"><span class="mi" id="MathJax-Span-3169" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3170" style="font-family: MathJax_Main; padding-left: 0.274em;">⊆</span><span class="mi" id="MathJax-Span-3171" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.203em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \subseteq y <span>$</span></td>
</tr>
<tr>
  <td>\supset</td>
  <td>超集</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-529-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3172" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.575em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3173"><span class="mi" id="MathJax-Span-3174" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3175" style="font-family: MathJax_Main; padding-left: 0.274em;">⊃</span><span class="mi" id="MathJax-Span-3176" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \supset y <span>$</span></td>
</tr>
<tr>
  <td>\supseteq</td>
  <td>超集</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-530-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3177" style="width: 2.93em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.388em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3178"><span class="mi" id="MathJax-Span-3179" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3180" style="font-family: MathJax_Main; padding-left: 0.274em;">⊇</span><span class="mi" id="MathJax-Span-3181" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.203em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \supseteq y <span>$</span></td>
</tr>
<tr>
  <td>\cup</td>
  <td>并</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-531-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3182" style="width: 2.713em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.171em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.52em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3183"><span class="mi" id="MathJax-Span-3184" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3185" style="font-family: MathJax_Main; padding-left: 0.22em;">∪</span><span class="mi" id="MathJax-Span-3186" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.137em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \cup y <span>$</span></td>
</tr>
<tr>
  <td>\cap</td>
  <td>交</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-532-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3187" style="width: 2.713em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.171em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.52em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3188"><span class="mi" id="MathJax-Span-3189" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3190" style="font-family: MathJax_Main; padding-left: 0.22em;">∩</span><span class="mi" id="MathJax-Span-3191" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.137em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> x \cap y <span>$</span></td>
</tr>
<tr>
  <td>\log</td>
  <td>对数</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-533-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3192" style="width: 3.146em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.55em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.358em 1000.003em 2.713em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3193"><span class="mi" id="MathJax-Span-3194" style="font-family: MathJax_Main;">log</span><span class="mo" id="MathJax-Span-3195"></span><span class="mo" id="MathJax-Span-3196" style="font-family: MathJax_Main;">(</span><span class="mi" id="MathJax-Span-3197" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3198" style="font-family: MathJax_Main;">)</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.337em; vertical-align: -0.397em;"></span></span></nobr></span></td>
  <td><span>$</span> \log(x) <span>$</span></td>
</tr>
<tr>
  <td>\overline</td>
  <td>平均数</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-534-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3199" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3200"><span class="munderover" id="MathJax-Span-3201"><span style="display: inline-block; position: relative; width: 0.545em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3202" style="font-family: MathJax_Math-italic;">x</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.412em 1000.003em 1.9em -0.431em); top: -2.382em; left: 0.003em;"><span class="mo" id="MathJax-Span-3203" style=""><span style="font-family: MathJax_Main;">¯</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.137em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td><span>$</span> \overline{x} <span>$</span></td>
</tr>
<tr>
  <td>\overline</td>
  <td>连线符号</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-535-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3204" style="width: 6.94em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.64em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.087em 1000.003em 2.55em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3205"><span class="munderover" id="MathJax-Span-3206"><span style="display: inline-block; position: relative; width: 5.585em; height: 0px;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.55em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3207"><span class="mi" id="MathJax-Span-3208" style="font-family: MathJax_Math-italic;">a</span><span class="mo" id="MathJax-Span-3209" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mi" id="MathJax-Span-3210" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">b</span><span class="mo" id="MathJax-Span-3211" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mi" id="MathJax-Span-3212" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">c</span><span class="mo" id="MathJax-Span-3213" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mi" id="MathJax-Span-3214" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.52em 1000.003em 1.9em -0.485em); top: -2.599em; left: 0.003em;"><span class="mo" id="MathJax-Span-3215" style=""><span style="display: inline-block; position: relative; width: 5.531em; height: 0px;"><span style="position: absolute; font-family: MathJax_Main; top: -4.008em; left: -0.051em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; font-family: MathJax_Main; top: -4.008em; left: 5.152em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 0.22em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 0.545em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 0.816em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 1.141em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 1.466em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 1.737em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 2.062em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 2.388em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 2.659em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 2.984em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 3.309em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 3.58em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 3.905em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 4.23em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 4.501em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 4.827em;">¯<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.537em; vertical-align: -0.197em;"></span></span></nobr></span></td>
  <td><span>$</span> \overline{a+b+c+d} <span>$</span></td>
</tr>
<tr>
  <td>\underline</td>
  <td>下划线</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-536-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3216" style="width: 6.886em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.585em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.821em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3217"><span class="munderover" id="MathJax-Span-3218"><span style="display: inline-block; position: relative; width: 5.531em; height: 0px;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.55em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3219"><span class="mi" id="MathJax-Span-3220" style="font-family: MathJax_Math-italic;">a</span><span class="mo" id="MathJax-Span-3221" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mi" id="MathJax-Span-3222" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">b</span><span class="mo" id="MathJax-Span-3223" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mi" id="MathJax-Span-3224" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">c</span><span class="mo" id="MathJax-Span-3225" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mi" id="MathJax-Span-3226" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.846em 1000.003em 2.333em -0.485em); top: -1.732em; left: 0.003em;"><span class="mo" id="MathJax-Span-3227" style=""><span style="display: inline-block; position: relative; width: 5.531em; height: 0px;"><span style="position: absolute; font-family: MathJax_Main; top: -4.008em; left: -0.106em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; font-family: MathJax_Main; top: -4.008em; left: 4.881em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 0.436em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 0.978em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 1.575em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 2.117em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 2.659em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 3.201em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 3.743em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Main; position: absolute; top: -4.008em; left: 4.285em;">−<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.47em; vertical-align: -0.53em;"></span></span></nobr></span></td>
  <td><span>$</span> \underline{a+b+c+d} <span>$</span></td>
</tr>
<tr>
  <td>\overbrace</td>
  <td>上大括号</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-537-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3228" style="width: 6.94em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.64em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(-0.106em 1000.003em 3.959em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3229"><span class="munderover" id="MathJax-Span-3230"><span style="display: inline-block; position: relative; width: 5.585em; height: 0px;"><span style="position: absolute; clip: rect(2.442em 1000.003em 5.694em -0.485em); top: -4.008em; left: 0.003em;"><span class="munderover" id="MathJax-Span-3231"><span style="display: inline-block; position: relative; width: 5.585em; height: 0px;"><span style="position: absolute; clip: rect(1.412em 1000.003em 3.959em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3232"><span class="mi" id="MathJax-Span-3233" style="font-family: MathJax_Math-italic;">a</span><span class="mo" id="MathJax-Span-3234" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="munderover" id="MathJax-Span-3235" style="padding-left: 0.22em;"><span style="display: inline-block; position: relative; width: 2.062em; height: 0px;"><span style="position: absolute; clip: rect(3.146em 1000.003em 4.989em -0.485em); top: -4.008em; left: 0.003em;"><span class="munderover" id="MathJax-Span-3236"><span style="display: inline-block; position: relative; width: 2.062em; height: 0px;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.55em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3237"><span class="mi" id="MathJax-Span-3238" style="font-family: MathJax_Math-italic;">b</span><span class="mo" id="MathJax-Span-3239" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mi" id="MathJax-Span-3240" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">c</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.791em 1000.003em 2.659em -0.485em); top: -1.678em; left: 0.003em;"><span class="mo" id="MathJax-Span-3241" style=""><span style="display: inline-block; position: relative; width: 2.062em; height: 0px;"><span style="position: absolute; font-family: MathJax_Size4; top: -4.008em; left: 0.003em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; font-family: MathJax_Size4; top: -4.008em; left: 1.629em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; font-family: MathJax_Size4; top: -4.008em; left: 0.599em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 0.328em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 1.358em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.55em -0.431em); top: -0.864em; left: 0.545em;"><span class="texatom" id="MathJax-Span-3242"><span class="mrow" id="MathJax-Span-3243"><span class="mn" id="MathJax-Span-3244" style="font-size: 70.7%; font-family: MathJax_Main;">1.0</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="mo" id="MathJax-Span-3245" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mi" id="MathJax-Span-3246" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.791em 1000.003em 2.659em -0.485em); top: -3.304em; left: 0.003em;"><span class="mo" id="MathJax-Span-3247" style=""><span style="display: inline-block; position: relative; width: 5.531em; height: 0px;"><span style="position: absolute; font-family: MathJax_Size4; top: -4.008em; left: 0.003em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; font-family: MathJax_Size4; top: -4.008em; left: 5.098em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; font-family: MathJax_Size4; top: -4.008em; left: 2.333em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 0.382em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 0.707em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 1.033em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 1.358em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 1.683em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 2.008em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 3.146em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 3.472em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 3.797em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 4.122em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 4.447em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 4.772em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; clip: rect(1.52em 1000.003em 2.442em -0.431em); top: -3.9em; left: 2.279em;"><span class="texatom" id="MathJax-Span-3248"><span class="mrow" id="MathJax-Span-3249"><span class="mn" id="MathJax-Span-3250" style="font-size: 70.7%; font-family: MathJax_Main;">2.0</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 4.737em; vertical-align: -1.93em;"></span></span></nobr></span></td>
  <td><span>$</span>\overbrace{a+\underbrace{b+c}_{1.0}+d}^{2.0}<span>$</span></td>
</tr>
<tr>
  <td>\underbrace</td>
  <td>下大括号</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-538-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3251" style="width: 2.875em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.333em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 3.959em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3252"><span class="munderover" id="MathJax-Span-3253"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px;"><span style="position: absolute; clip: rect(3.146em 1000.003em 4.989em -0.485em); top: -4.008em; left: 0.003em;"><span class="munderover" id="MathJax-Span-3254"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.55em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3255"><span class="mi" id="MathJax-Span-3256" style="font-family: MathJax_Math-italic;">a</span><span class="mo" id="MathJax-Span-3257" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mi" id="MathJax-Span-3258" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.791em 1000.003em 2.659em -0.485em); top: -1.678em; left: 0.003em;"><span class="mo" id="MathJax-Span-3259" style=""><span style="display: inline-block; position: relative; width: 2.279em; height: 0px;"><span style="position: absolute; font-family: MathJax_Size4; top: -4.008em; left: 0.003em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; font-family: MathJax_Size4; top: -4.008em; left: 1.846em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; font-family: MathJax_Size4; top: -4.008em; left: 0.707em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 0.382em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -4.008em; left: 1.52em;"><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.55em -0.431em); top: -0.864em; left: 0.978em;"><span class="mn" id="MathJax-Span-3260" style="font-size: 70.7%; font-family: MathJax_Main;">3</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 2.87em; vertical-align: -1.93em;"></span></span></nobr></span></td>
  <td><span>$</span> \underbrace{a+d}_3 <span>$</span></td>
</tr>
<tr>
  <td>\partial</td>
  <td>部分</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-539-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3261" style="width: 1.466em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.195em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.195em 1000.003em 2.984em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3262"><span class="mfrac" id="MathJax-Span-3263"><span style="display: inline-block; position: relative; width: 0.924em; height: 0px; margin-right: 0.111em; margin-left: 0.111em;"><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.707em; left: 50%; margin-left: -0.377em;"><span class="mrow" id="MathJax-Span-3264"><span class="mi" id="MathJax-Span-3265" style="font-size: 70.7%; font-family: MathJax_Main;">∂<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mi" id="MathJax-Span-3266" style="font-size: 70.7%; font-family: MathJax_Math-italic;">x</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.604em -0.431em); top: -1.84em; left: 50%; margin-left: -0.377em;"><span class="mrow" id="MathJax-Span-3267"><span class="mi" id="MathJax-Span-3268" style="font-size: 70.7%; font-family: MathJax_Main;">∂<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mi" id="MathJax-Span-3269" style="font-size: 70.7%; font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(0.87em 1000.003em 1.249em -0.485em); top: -1.298em; left: 0.003em;"><span style="border-left-width: 0.924em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.25px; vertical-align: 0.003em;"></span><span style="display: inline-block; width: 0px; height: 1.087em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 2.003em; vertical-align: -0.73em;"></span></span></nobr></span></td>
  <td><span>$</span> \frac{\partial x}{\partial y} <span>$</span></td>
</tr>
<tr>
  <td>\lim</td>
  <td>极限</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-540-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3270" style="width: 4.014em; display: inline-block;"><span style="display: inline-block; position: relative; width: 3.255em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.604em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3271"><span class="munderover" id="MathJax-Span-3272"><span style="display: inline-block; position: relative; width: 3.201em; height: 0px;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mo" id="MathJax-Span-3273" style="font-family: MathJax_Main;">lim</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.111em; left: 1.358em;"><span class="texatom" id="MathJax-Span-3274"><span class="mrow" id="MathJax-Span-3275"><span class="mi" id="MathJax-Span-3276" style="font-size: 70.7%; font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3277" style="font-size: 70.7%; font-family: MathJax_Main;">→</span><span class="mi" id="MathJax-Span-3278" style="font-size: 70.7%; font-family: MathJax_Main;">∞</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.203em; vertical-align: -0.263em;"></span></span></nobr></span></td>
  <td><span>$</span> \lim_{x\to\infty} <span>$</span></td>
</tr>
<tr>
  <td>\displaystyle</td>
  <td>块公式格式</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-541-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3279" style="width: 2.279em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.846em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 3.146em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3280"><span class="mstyle" id="MathJax-Span-3281"><span class="mrow" id="MathJax-Span-3282"><span class="munderover" id="MathJax-Span-3283"><span style="display: inline-block; position: relative; width: 1.791em; height: 0px;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.22em;"><span class="mo" id="MathJax-Span-3284" style="font-family: MathJax_Main;">lim</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.737em 1000.003em 2.55em -0.485em); top: -1.678em; left: 0.003em;"><span class="texatom" id="MathJax-Span-3285"><span class="mrow" id="MathJax-Span-3286"><span class="mi" id="MathJax-Span-3287" style="font-size: 70.7%; font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3288" style="font-size: 70.7%; font-family: MathJax_Main;">→</span><span class="mi" id="MathJax-Span-3289" style="font-size: 70.7%; font-family: MathJax_Main;">∞</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.87em; vertical-align: -0.93em;"></span></span></nobr></span></td>
  <td><span>$</span> \displaystyle \lim_{x\to\infty} <span>$</span></td>
</tr>
<tr>
  <td>\sum</td>
  <td>求和</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-542-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3290" style="width: 2.821em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.713em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3291"><span class="munderover" id="MathJax-Span-3292"><span style="display: inline-block; position: relative; width: 2.225em; height: 0px;"><span style="position: absolute; clip: rect(1.358em 1000.003em 2.713em -0.431em); top: -2.274em; left: 0.003em;"><span class="mo" id="MathJax-Span-3293" style="font-family: MathJax_Size1; vertical-align: 0.003em;">∑</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.791em 1000.003em 2.442em -0.485em); top: -2.762em; left: 1.033em;"><span class="mi" id="MathJax-Span-3294" style="font-size: 70.7%; font-family: MathJax_Math-italic;">n</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.485em); top: -2.003em; left: 1.033em;"><span class="texatom" id="MathJax-Span-3295"><span class="mrow" id="MathJax-Span-3296"><span class="mi" id="MathJax-Span-3297" style="font-size: 70.7%; font-family: MathJax_Math-italic;">i</span><span class="mo" id="MathJax-Span-3298" style="font-size: 70.7%; font-family: MathJax_Main;">=</span><span class="mn" id="MathJax-Span-3299" style="font-size: 70.7%; font-family: MathJax_Main;">1</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.47em; vertical-align: -0.397em;"></span></span></nobr></span></td>
  <td><span>$</span> \sum_{i=1}^n <span>$</span></td>
</tr>
<tr>
  <td>\infty</td>
  <td>极限</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-543-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3300" style="width: 3.959em; display: inline-block;"><span style="display: inline-block; position: relative; width: 3.201em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.249em 1000.003em 2.767em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3301"><span class="munderover" id="MathJax-Span-3302"><span style="display: inline-block; position: relative; width: 2.225em; height: 0px;"><span style="position: absolute; clip: rect(1.358em 1000.003em 2.713em -0.431em); top: -2.274em; left: 0.003em;"><span class="mo" id="MathJax-Span-3303" style="font-family: MathJax_Size1; vertical-align: 0.003em;">∑</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.791em 1000.003em 2.442em -0.431em); top: -2.762em; left: 1.033em;"><span class="mi" id="MathJax-Span-3304" style="font-size: 70.7%; font-family: MathJax_Main;">∞</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.485em); top: -2.003em; left: 1.033em;"><span class="texatom" id="MathJax-Span-3305"><span class="mrow" id="MathJax-Span-3306"><span class="mi" id="MathJax-Span-3307" style="font-size: 70.7%; font-family: MathJax_Math-italic;">i</span><span class="mo" id="MathJax-Span-3308" style="font-size: 70.7%; font-family: MathJax_Main;">=</span><span class="mn" id="MathJax-Span-3309" style="font-size: 70.7%; font-family: MathJax_Main;">0</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="msubsup" id="MathJax-Span-3310" style="padding-left: 0.165em;"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3311" style="font-family: MathJax_Math-italic;">i</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.653em; left: 0.328em;"><span class="mn" id="MathJax-Span-3312" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.537em; vertical-align: -0.463em;"></span></span></nobr></span></td>
  <td><span>$</span> \sum_{i=0}^\infty i^2 <span>$</span></td>
</tr>
<tr>
  <td>\int</td>
  <td>积分</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-544-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3313" style="width: 4.285em; display: inline-block;"><span style="display: inline-block; position: relative; width: 3.472em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.087em 1000.003em 2.821em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3314"><span class="msubsup" id="MathJax-Span-3315"><span style="display: inline-block; position: relative; width: 1.195em; height: 0px;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.767em -0.431em); top: -2.274em; left: 0.003em;"><span class="mo" id="MathJax-Span-3316" style="font-family: MathJax_Size1; vertical-align: 0.003em;">∫<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.165em;"></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.816em; left: 0.762em;"><span class="mn" id="MathJax-Span-3317" style="font-size: 70.7%; font-family: MathJax_Main;">1</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -1.949em; left: 0.491em;"><span class="mn" id="MathJax-Span-3318" style="font-size: 70.7%; font-family: MathJax_Main;">0</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="msubsup" id="MathJax-Span-3319" style="padding-left: 0.165em;"><span style="display: inline-block; position: relative; width: 0.978em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3320" style="font-family: MathJax_Math-italic;">x</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.653em; left: 0.545em;"><span class="mn" id="MathJax-Span-3321" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="texatom" id="MathJax-Span-3322"><span class="mrow" id="MathJax-Span-3323"><span class="mi" id="MathJax-Span-3324" style="font-family: MathJax_Main;">d</span></span></span><span class="mi" id="MathJax-Span-3325" style="font-family: MathJax_Math-italic;">x</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.803em; vertical-align: -0.53em;"></span></span></nobr></span></td>
  <td><span>$</span> \int_0^1 x^2 {\rm d}x <span>$</span></td>
</tr>
<tr>
  <td>\iint</td>
  <td>二重积分</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-545-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3326" style="width: 6.886em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.585em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.767em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3327"><span class="msubsup" id="MathJax-Span-3328"><span style="display: inline-block; position: relative; width: 1.575em; height: 0px;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.767em -0.431em); top: -2.274em; left: 0.003em;"><span class="mo" id="MathJax-Span-3329" style="font-family: MathJax_Size1; vertical-align: 0.003em;">∬<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.165em;"></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -1.949em; left: 0.87em;"><span class="mi" id="MathJax-Span-3330" style="font-size: 70.7%; font-family: MathJax_Math-italic;">D</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="mi" id="MathJax-Span-3331" style="font-family: MathJax_Math-italic; padding-left: 0.165em;">f<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mo" id="MathJax-Span-3332" style="font-family: MathJax_Main;">(</span><span class="mi" id="MathJax-Span-3333" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3334" style="font-family: MathJax_Main;">,</span><span class="mi" id="MathJax-Span-3335" style="font-family: MathJax_Math-italic; padding-left: 0.165em;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-3336" style="font-family: MathJax_Main;">)</span><span class="mi" id="MathJax-Span-3337" style="font-family: MathJax_Math-italic;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mi" id="MathJax-Span-3338" style="font-family: MathJax_Math-italic;">σ<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.537em; vertical-align: -0.463em;"></span></span></nobr></span></td>
  <td><span>$</span> \iint_D f(x,y)d\sigma <span>$</span></td>
</tr>
<tr>
  <td>\oint</td>
  <td>曲面积分</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-546-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3339" style="width: 4.339em; display: inline-block;"><span style="display: inline-block; position: relative; width: 3.526em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.767em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3340"><span class="mo" id="MathJax-Span-3341" style="font-family: MathJax_Size1; vertical-align: 0.003em;">∮<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.165em;"></span></span><span class="msubsup" id="MathJax-Span-3342" style="padding-left: 0.165em;"><span style="display: inline-block; position: relative; width: 1.791em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3343" style="font-family: MathJax_Math-italic;">e</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.653em; left: 0.436em;"><span class="texatom" id="MathJax-Span-3344"><span class="mrow" id="MathJax-Span-3345"><span class="mi" id="MathJax-Span-3346" style="font-size: 70.7%; font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3347" style="font-size: 70.7%; font-family: MathJax_Main;">+</span><span class="mi" id="MathJax-Span-3348" style="font-size: 70.7%; font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="mi" id="MathJax-Span-3349" style="font-family: MathJax_Math-italic;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mi" id="MathJax-Span-3350" style="font-family: MathJax_Math-italic;">s</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.47em; vertical-align: -0.463em;"></span></span></nobr></span></td>
  <td><span>$</span> \oint e^{x+y} ds <span>$</span></td>
</tr>
<tr>
  <td>\ldots</td>
  <td>底端对齐的省略号</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-547-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3351" style="width: 5.152em; display: inline-block;"><span style="display: inline-block; position: relative; width: 4.176em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.659em -0.377em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3352"><span class="mn" id="MathJax-Span-3353" style="font-family: MathJax_Main;">1</span><span class="mo" id="MathJax-Span-3354" style="font-family: MathJax_Main;">,</span><span class="mn" id="MathJax-Span-3355" style="font-family: MathJax_Main; padding-left: 0.165em;">2</span><span class="mo" id="MathJax-Span-3356" style="font-family: MathJax_Main;">,</span><span class="mo" id="MathJax-Span-3357" style="font-family: MathJax_Main; padding-left: 0.165em;">…</span><span class="mo" id="MathJax-Span-3358" style="font-family: MathJax_Main; padding-left: 0.165em;">,</span><span class="mi" id="MathJax-Span-3359" style="font-family: MathJax_Math-italic; padding-left: 0.165em;">n</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.203em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> 1,2,\ldots,n <span>$</span></td>
</tr>
<tr>
  <td>\cdots</td>
  <td>中线对齐的省略号</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-548-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3360" style="width: 6.886em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.585em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(3.038em 1000.003em 5.911em -0.431em); top: -4.008em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3361"><span style="display: inline-block; position: relative; width: 5.585em; height: 0px;"><span style="position: absolute; clip: rect(3.038em 1000.003em 4.501em -0.431em); top: -4.008em; left: 0.003em;"><span class="msubsup" id="MathJax-Span-3362"><span style="display: inline-block; position: relative; width: 0.978em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3363" style="font-family: MathJax_Math-italic;">x</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.599em; left: 0.545em;"><span class="mn" id="MathJax-Span-3364" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -1.949em; left: 0.545em;"><span class="mn" id="MathJax-Span-3365" style="font-size: 70.7%; font-family: MathJax_Main;">1</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="mo" id="MathJax-Span-3366" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="msubsup" id="MathJax-Span-3367" style="padding-left: 0.22em;"><span style="display: inline-block; position: relative; width: 0.978em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3368" style="font-family: MathJax_Math-italic;">x</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.599em; left: 0.545em;"><span class="mn" id="MathJax-Span-3369" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -1.949em; left: 0.545em;"><span class="mn" id="MathJax-Span-3370" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="mo" id="MathJax-Span-3371" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mo" id="MathJax-Span-3372" style="font-family: MathJax_Main; padding-left: 0.22em;">⋯</span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; clip: rect(3.038em 1000.003em 4.339em -0.431em); top: -2.436em; left: 0.003em;"><span class="mo" id="MathJax-Span-3373" style="font-family: MathJax_Main;">+</span><span class="msubsup" id="MathJax-Span-3374" style="padding-left: 0.22em;"><span style="display: inline-block; position: relative; width: 1.033em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3375" style="font-family: MathJax_Math-italic;">x</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.599em; left: 0.545em;"><span class="mn" id="MathJax-Span-3376" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.791em 1000.003em 2.442em -0.485em); top: -2.111em; left: 0.545em;"><span class="mi" id="MathJax-Span-3377" style="font-size: 70.7%; font-family: MathJax_Math-italic;">n</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 3.27em; vertical-align: -2.197em;"></span></span></nobr></span></td>
  <td><span>$</span> x_1^2 + x_2^2 + \cdots + x_n^2 <span>$</span></td>
</tr>
<tr>
  <td>\uparrow</td>
  <td>上箭头</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-549-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3378" style="width: 0.599em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.491em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3379"><span class="mo" id="MathJax-Span-3380" style="font-family: MathJax_Main;">↑</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.203em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> \uparrow <span>$</span></td>
</tr>
<tr>
  <td>\Uparrow</td>
  <td>上箭头</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-550-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3381" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3382"><span class="mo" id="MathJax-Span-3383" style="font-family: MathJax_Main;">⇑</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.203em; vertical-align: -0.33em;"></span></span></nobr></span></td>
  <td><span>$</span> \Uparrow <span>$</span></td>
</tr>
<tr>
  <td>\vec</td>
  <td>向量</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-551-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3384" style="width: 0.762em; display: inline-block;"><span style="display: inline-block; position: relative; width: 0.599em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.358em 1000.003em 2.442em -0.919em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3385"><span class="texatom" id="MathJax-Span-3386"><span class="mrow" id="MathJax-Span-3387"><span class="munderover" id="MathJax-Span-3388"><span style="display: inline-block; position: relative; width: 0.545em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3389" style="font-family: MathJax_Math-italic;">a</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -4.062em; left: 0.057em;"><span style="height: 0.003em; vertical-align: 0.003em; width: 0.491em; display: inline-block; overflow: hidden;"></span><span class="mo" id="MathJax-Span-3390" style="font-family: MathJax_Main;">⃗&nbsp;<span style="height: 0.003em; vertical-align: 0.003em; margin-left: -0.268em;"></span></span><span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td><span>$</span> \vec{a} <span>$</span></td>
</tr>
<tr>
  <td>\hat</td>
  <td>拟合值</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-552-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3391" style="width: 7.753em; display: inline-block;"><span style="display: inline-block; position: relative; width: 6.29em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.087em 1000.003em 2.713em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3392"><span class="texatom" id="MathJax-Span-3393"><span class="mrow" id="MathJax-Span-3394"><span class="munderover" id="MathJax-Span-3395"><span style="display: inline-block; position: relative; width: 0.762em; height: 0px;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3396" style="font-family: MathJax_Math-italic;">Y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.165em;"></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.412em 1000.003em 1.9em -0.377em); top: -2.545em; left: 0.274em;"><span class="mo" id="MathJax-Span-3397" style="font-family: MathJax_Main;">^</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span></span><span class="mo" id="MathJax-Span-3398" style="font-family: MathJax_Main; padding-left: 0.274em;">=</span><span class="msubsup" id="MathJax-Span-3399" style="padding-left: 0.274em;"><span style="display: inline-block; position: relative; width: 1.087em; height: 0px;"><span style="position: absolute; clip: rect(2.821em 1000.003em 4.393em -0.485em); top: -4.008em; left: 0.003em;"><span class="texatom" id="MathJax-Span-3400"><span class="mrow" id="MathJax-Span-3401"><span class="munderover" id="MathJax-Span-3402"><span style="display: inline-block; position: relative; width: 0.653em; height: 0px;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3403" style="font-family: MathJax_Math-italic;">β<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.412em 1000.003em 1.9em -0.377em); top: -2.599em; left: 0.165em;"><span class="mo" id="MathJax-Span-3404" style="font-family: MathJax_Main;">^</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; top: -2.057em; left: 0.653em;"><span class="mn" id="MathJax-Span-3405" style="font-size: 70.7%; font-family: MathJax_Main;">0</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="mo" id="MathJax-Span-3406" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="msubsup" id="MathJax-Span-3407" style="padding-left: 0.22em;"><span style="display: inline-block; position: relative; width: 1.087em; height: 0px;"><span style="position: absolute; clip: rect(2.821em 1000.003em 4.393em -0.485em); top: -4.008em; left: 0.003em;"><span class="texatom" id="MathJax-Span-3408"><span class="mrow" id="MathJax-Span-3409"><span class="munderover" id="MathJax-Span-3410"><span style="display: inline-block; position: relative; width: 0.653em; height: 0px;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3411" style="font-family: MathJax_Math-italic;">β<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.412em 1000.003em 1.9em -0.377em); top: -2.599em; left: 0.165em;"><span class="mo" id="MathJax-Span-3412" style="font-family: MathJax_Main;">^</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; top: -2.057em; left: 0.653em;"><span class="mn" id="MathJax-Span-3413" style="font-size: 70.7%; font-family: MathJax_Main;">1</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="mi" id="MathJax-Span-3414" style="font-family: MathJax_Math-italic;">X<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.67em; vertical-align: -0.397em;"></span></span></nobr></span></td>
  <td><span>$</span>\hat Y = \hat \beta_0 + \hat \beta_1X <span>$</span></td>
</tr>
<tr>
  <td>\bot</td>
  <td>垂直</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-553-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3415" style="width: 2.821em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.279em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3416"><span class="mi" id="MathJax-Span-3417" style="font-family: MathJax_Math-italic;">A</span><span class="mi" id="MathJax-Span-3418" style="font-family: MathJax_Main;">⊥</span><span class="mi" id="MathJax-Span-3419" style="font-family: MathJax_Math-italic;">B</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.003em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td><span>$</span> A \bot B <span>$</span></td>
</tr>
<tr>
  <td>\circ</td>
  <td>度</td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-554-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3420" style="width: 1.846em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.466em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3421"><span class="msubsup" id="MathJax-Span-3422"><span style="display: inline-block; position: relative; width: 1.412em; height: 0px;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mn" id="MathJax-Span-3423" style="font-family: MathJax_Main;">45</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.653em; left: 0.978em;"><span class="mo" id="MathJax-Span-3424" style="font-size: 70.7%; font-family: MathJax_Main;">∘</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
  <td><span>$</span> 45^\circ <span>$</span></td>
</tr>
</tbody></table>




<p></p><p></p>


<h2 id="用法"><strong>用法:</strong></h2>


<pre class="prettyprint"><code class=" hljs ruby"> <span class="hljs-number">1</span>. 在<span class="hljs-variable">$…</span><span class="hljs-variable">$中</span>插入<span class="hljs-constant">MathJax</span>语法(仅仅能在行内输入。不能换行):<span class="hljs-variable">$S</span> = \pi r^<span class="hljs-number">2</span><span class="hljs-variable">$
</span> <span class="hljs-number">2</span>. 在<span class="hljs-variable">$$</span>…<span class="hljs-variable">$$</span>中插入<span class="hljs-constant">MathJax</span>语法(能够换行):
<span class="hljs-variable">$$</span>
\<span class="hljs-constant">Gamma</span>(z) = \int_<span class="hljs-number">0</span>^\infty t^{z-<span class="hljs-number">1</span>} e^{-t} dt
<span class="hljs-variable">$$</span></code></pre>


<p>效果:</p>


<blockquote>
  <p>1.在<strong><span>$</span>…<span>$</span></strong>中插入MathJax语法(仅仅能在行内输入,不能换行):<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-557-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3459" style="width: 4.23em; display: inline-block;"><span style="display: inline-block; position: relative; width: 3.417em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3460"><span class="mi" id="MathJax-Span-3461" style="font-family: MathJax_Math-italic;">S<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mo" id="MathJax-Span-3462" style="font-family: MathJax_Main; padding-left: 0.274em;">=</span><span class="mi" id="MathJax-Span-3463" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">π<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="msubsup" id="MathJax-Span-3464"><span style="display: inline-block; position: relative; width: 0.87em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3465" style="font-family: MathJax_Math-italic;">r</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.653em; left: 0.436em;"><span class="mn" id="MathJax-Span-3466" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.203em; vertical-align: -0.063em;"></span></span></nobr></span> <br>
  2.在<strong><span>$</span><span>$</span>…<span>$</span><span>$</span></strong>中插入MathJax语法(能够换行): <br>
  <span class="MathJax_Preview"></span></p><div class="MathJax_Display" role="textbox" aria-readonly="true" style="text-align: center;"><span class="MathJax" id="MathJax-Element-558-Frame"><nobr><span class="math" id="MathJax-Span-3467" style="width: 11.06em; display: inline-block;"><span style="display: inline-block; position: relative; width: 9em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(0.707em 1000.003em 3.363em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3468"><span class="mi" id="MathJax-Span-3469" style="font-family: MathJax_Main;">Γ</span><span class="mo" id="MathJax-Span-3470" style="font-family: MathJax_Main;">(</span><span class="mi" id="MathJax-Span-3471" style="font-family: MathJax_Math-italic;">z<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-3472" style="font-family: MathJax_Main;">)</span><span class="mo" id="MathJax-Span-3473" style="font-family: MathJax_Main; padding-left: 0.274em;">=</span><span class="msubsup" id="MathJax-Span-3474" style="padding-left: 0.274em;"><span style="display: inline-block; position: relative; width: 1.9em; height: 0px;"><span style="position: absolute; clip: rect(1.575em 1000.003em 4.122em -0.431em); top: -3.087em; left: 0.003em;"><span class="mo" id="MathJax-Span-3475" style="font-family: MathJax_Size2; vertical-align: 0.003em;">∫<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.382em;"></span></span><span style="display: inline-block; width: 0px; height: 3.092em;"></span></span><span style="position: absolute; clip: rect(1.791em 1000.003em 2.442em -0.431em); top: -3.358em; left: 1.141em;"><span class="mi" id="MathJax-Span-3476" style="font-size: 70.7%; font-family: MathJax_Main;">∞</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -1.352em; left: 0.599em;"><span class="mn" id="MathJax-Span-3477" style="font-size: 70.7%; font-family: MathJax_Main;">0</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="msubsup" id="MathJax-Span-3478" style="padding-left: 0.165em;"><span style="display: inline-block; position: relative; width: 1.683em; height: 0px;"><span style="position: absolute; clip: rect(1.466em 1000.003em 2.442em -0.485em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3479" style="font-family: MathJax_Math-italic;">t</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.707em; left: 0.328em;"><span class="texatom" id="MathJax-Span-3480"><span class="mrow" id="MathJax-Span-3481"><span class="mi" id="MathJax-Span-3482" style="font-size: 70.7%; font-family: MathJax_Math-italic;">z<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-3483" style="font-size: 70.7%; font-family: MathJax_Main;">−</span><span class="mn" id="MathJax-Span-3484" style="font-size: 70.7%; font-family: MathJax_Main;">1</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="msubsup" id="MathJax-Span-3485"><span style="display: inline-block; position: relative; width: 1.304em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3486" style="font-family: MathJax_Math-italic;">e</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.707em; left: 0.436em;"><span class="texatom" id="MathJax-Span-3487"><span class="mrow" id="MathJax-Span-3488"><span class="mo" id="MathJax-Span-3489" style="font-size: 70.7%; font-family: MathJax_Main;">−</span><span class="mi" id="MathJax-Span-3490" style="font-size: 70.7%; font-family: MathJax_Math-italic;">t</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="mi" id="MathJax-Span-3491" style="font-family: MathJax_Math-italic;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mi" id="MathJax-Span-3492" style="font-family: MathJax_Math-italic;">t</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 3.003em; vertical-align: -1.197em;"></span></span></nobr></span></div><p></p>
</blockquote>


<h2 id="附加内容"><strong>附加内容:</strong></h2>


<blockquote>
  <ol>
  <li><code>$\sideset{^1_2}{^3_4}\bigotimes$</code>——<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-583-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3865" style="width: 2.496em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.008em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.195em 1000.003em 2.713em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3866"><span class="texatom" id="MathJax-Span-3867"><span class="mrow" id="MathJax-Span-3868"><span class="msubsup" id="MathJax-Span-3869"><span style="display: inline-block; position: relative; width: 0.436em; height: 0px;"><span style="position: absolute; clip: rect(3.092em 1000.003em 4.447em -0.485em); top: -4.008em; left: 0.003em;"><span class="texatom" id="MathJax-Span-3870"><span class="mrow" id="MathJax-Span-3871"><span class="texatom" id="MathJax-Span-3872"><span class="mrow" id="MathJax-Span-3873"><span class="mpadded" id="MathJax-Span-3874"><span style="display: inline-block; position: relative; width: 0.003em; height: 0px;"><span style="position: absolute; clip: rect(3.092em 1000.003em 4.447em -0.485em); top: -4.008em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3875"><span class="texatom" id="MathJax-Span-3876"><span class="mrow" id="MathJax-Span-3877"><span class="mphantom" id="MathJax-Span-3878"><span class="mrow" id="MathJax-Span-3879" style="visibility: hidden;"><span class="mo" id="MathJax-Span-3880" style="font-family: MathJax_Size1; vertical-align: 0.003em;">⨂</span></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.762em; left: 0.003em;"><span class="mn" id="MathJax-Span-3881" style="font-size: 70.7%; font-family: MathJax_Main;">1</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.003em; left: 0.003em;"><span class="mn" id="MathJax-Span-3882" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="mspace" id="MathJax-Span-3883" style="height: 0.003em; vertical-align: 0.003em; margin-left: -0.16em;"></span><span class="msubsup" id="MathJax-Span-3884" style="padding-left: 0.165em;"><span style="display: inline-block; position: relative; width: 1.52em; height: 0px;"><span style="position: absolute; clip: rect(1.358em 1000.003em 2.713em -0.431em); top: -2.274em; left: 0.003em;"><span class="texatom" id="MathJax-Span-3885"><span class="mrow" id="MathJax-Span-3886"><span class="mo" id="MathJax-Span-3887" style="font-family: MathJax_Size1; vertical-align: 0.003em;">⨂</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.762em; left: 1.087em;"><span class="mn" id="MathJax-Span-3888" style="font-size: 70.7%; font-family: MathJax_Main;">3</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.485em); top: -2.003em; left: 1.087em;"><span class="mn" id="MathJax-Span-3889" style="font-size: 70.7%; font-family: MathJax_Main;">4</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.67em; vertical-align: -0.397em;"></span></span></nobr></span></li>
  <li>加空格:能够加 <strong>\空格</strong>,<strong>\quad</strong> 与  <strong>\qquad</strong> 的空格更大。 <br>
  <code>$a\ bcd\quad efghij\qquad k$</code>——<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-584-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3890" style="width: 10.355em; display: inline-block;"><span style="display: inline-block; position: relative; width: 8.404em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.659em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3891"><span class="mi" id="MathJax-Span-3892" style="font-family: MathJax_Math-italic;">a</span><span class="mtext" id="MathJax-Span-3893" style="font-family: MathJax_Main;">&nbsp;</span><span class="mi" id="MathJax-Span-3894" style="font-family: MathJax_Math-italic;">b</span><span class="mi" id="MathJax-Span-3895" style="font-family: MathJax_Math-italic;">c</span><span class="mi" id="MathJax-Span-3896" style="font-family: MathJax_Math-italic;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mspace" id="MathJax-Span-3897" style="height: 0.003em; vertical-align: 0.003em; width: 0.978em; display: inline-block; overflow: hidden;"></span><span class="mi" id="MathJax-Span-3898" style="font-family: MathJax_Math-italic;">e</span><span class="mi" id="MathJax-Span-3899" style="font-family: MathJax_Math-italic;">f<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-3900" style="font-family: MathJax_Math-italic;">g<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mi" id="MathJax-Span-3901" style="font-family: MathJax_Math-italic;">h</span><span class="mi" id="MathJax-Span-3902" style="font-family: MathJax_Math-italic;">i</span><span class="mi" id="MathJax-Span-3903" style="font-family: MathJax_Math-italic;">j</span><span class="mspace" id="MathJax-Span-3904" style="height: 0.003em; vertical-align: 0.003em; width: 2.008em; display: inline-block; overflow: hidden;"></span><span class="mi" id="MathJax-Span-3905" style="font-family: MathJax_Math-italic;">k</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.27em; vertical-align: -0.33em;"></span></span></nobr></span></li>
  <li>换行:\\ <br>
  <code>$1234\\567$</code>——<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-585-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3906" style="width: 2.496em; display: inline-block;"><span style="display: inline-block; position: relative; width: 2.008em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(3.201em 1000.003em 5.423em -0.485em); top: -4.008em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3907"><span style="display: inline-block; position: relative; width: 2.008em; height: 0px;"><span style="position: absolute; clip: rect(3.201em 1000.003em 4.176em -0.377em); top: -4.008em; left: 0.003em;"><span class="mn" id="MathJax-Span-3908" style="font-family: MathJax_Main;">1234</span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; clip: rect(3.201em 1000.003em 4.176em -0.485em); top: -2.816em; left: 0.003em;"><span class="mspace" id="MathJax-Span-3909" style="height: 0.003em; vertical-align: 0.003em; width: 0.003em; display: inline-block; overflow: hidden;"></span><span class="mn" id="MathJax-Span-3910" style="font-family: MathJax_Main;">567</span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span></span><span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 2.47em; vertical-align: -1.597em;"></span></span></nobr></span></li>
  <li>括号自适应大小: <br>
  <code>$(\frac12)$</code>——<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-586-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3911" style="width: 1.9em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.52em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.249em 1000.003em 2.821em -0.377em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3912"><span class="mo" id="MathJax-Span-3913" style="font-family: MathJax_Main;">(</span><span class="mfrac" id="MathJax-Span-3914"><span style="display: inline-block; position: relative; width: 0.491em; height: 0px; margin-right: 0.111em; margin-left: 0.111em;"><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.707em; left: 50%; margin-left: -0.16em;"><span class="mn" id="MathJax-Span-3915" style="font-size: 70.7%; font-family: MathJax_Main;">1</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -1.894em; left: 50%; margin-left: -0.16em;"><span class="mn" id="MathJax-Span-3916" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(0.87em 1000.003em 1.249em -0.485em); top: -1.298em; left: 0.003em;"><span style="border-left-width: 0.491em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.25px; vertical-align: 0.003em;"></span><span style="display: inline-block; width: 0px; height: 1.087em;"></span></span></span></span><span class="mo" id="MathJax-Span-3917" style="font-family: MathJax_Main;">)</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.67em; vertical-align: -0.53em;"></span></span></nobr></span> <br>
  <code>$ \left(\frac12\right)$</code>——<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-587-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3918" style="width: 2.442em; display: inline-block;"><span style="display: inline-block; position: relative; width: 1.954em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.791em 1000.003em 3.905em -0.322em); top: -3.087em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3919"><span class="mrow" id="MathJax-Span-3920"><span class="mo" id="MathJax-Span-3921" style="vertical-align: 0.003em;"><span style="font-family: MathJax_Size2;">(</span></span><span class="mfrac" id="MathJax-Span-3922"><span style="display: inline-block; position: relative; width: 0.491em; height: 0px; margin-right: 0.111em; margin-left: 0.111em;"><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -2.707em; left: 50%; margin-left: -0.16em;"><span class="mn" id="MathJax-Span-3923" style="font-size: 70.7%; font-family: MathJax_Main;">1</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.629em 1000.003em 2.442em -0.431em); top: -1.894em; left: 50%; margin-left: -0.16em;"><span class="mn" id="MathJax-Span-3924" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(0.87em 1000.003em 1.249em -0.485em); top: -1.298em; left: 0.003em;"><span style="border-left-width: 0.491em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.25px; vertical-align: 0.003em;"></span><span style="display: inline-block; width: 0px; height: 1.087em;"></span></span></span></span><span class="mo" id="MathJax-Span-3925" style="vertical-align: 0.003em;"><span style="font-family: MathJax_Size2;">)</span></span></span></span><span style="display: inline-block; width: 0px; height: 3.092em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 2.337em; vertical-align: -0.863em;"></span></span></nobr></span></li>
  <li>方程组: <br>
  <code>$\left\{\begin{array}\\y=2x^2+1\\{y=4x;}\\y-z=x; \end{array}\right.$</code> <br>
  <span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-588-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-3926" style="width: 7.699em; display: inline-block;"><span style="display: inline-block; position: relative; width: 6.236em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(2.117em 1000.003em 6.29em -0.322em); top: -4.442em; left: 0.003em;"><span class="mrow" id="MathJax-Span-3927"><span class="mrow" id="MathJax-Span-3928"><span class="mo" id="MathJax-Span-3929" style="vertical-align: 2.171em;"><span style="display: inline-block; position: relative; width: 0.87em; height: 0px;"><span style="position: absolute; font-family: MathJax_Size4; top: -3.087em; left: 0.003em;">⎧<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; font-family: MathJax_Size4; top: -1.081em; left: 0.003em;">⎩<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="position: absolute; font-family: MathJax_Size4; top: -1.84em; left: 0.003em;">⎨<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -2.87em; left: 0.003em;">⎪<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span><span style="font-family: MathJax_Size4; position: absolute; top: -0.973em; left: 0.003em;">⎪<span style="display: inline-block; width: 0px; height: 4.014em;"></span></span></span></span><span class="mtable" id="MathJax-Span-3930" style="padding-right: 0.165em; padding-left: 0.165em;"><span style="display: inline-block; position: relative; width: 4.989em; height: 0px;"><span style="position: absolute; clip: rect(2.496em 1000.003em 6.669em -0.485em); top: -4.821em; left: 0.003em;"><span style="display: inline-block; position: relative; width: 4.989em; height: 0px;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.659em -0.485em); top: -3.629em; left: 0.003em;"><span class="mtd" id="MathJax-Span-3931"><span class="mrow" id="MathJax-Span-3932"><span class="mi" id="MathJax-Span-3933" style="font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-3934" style="font-family: MathJax_Main; padding-left: 0.274em;">=</span><span class="mn" id="MathJax-Span-3935" style="font-family: MathJax_Main; padding-left: 0.274em;">2</span><span class="msubsup" id="MathJax-Span-3936"><span style="display: inline-block; position: relative; width: 0.978em; height: 0px;"><span style="position: absolute; clip: rect(1.683em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mi" id="MathJax-Span-3937" style="font-family: MathJax_Math-italic;">x</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; top: -2.653em; left: 0.545em;"><span class="mn" id="MathJax-Span-3938" style="font-size: 70.7%; font-family: MathJax_Main;">2</span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span></span><span class="mo" id="MathJax-Span-3939" style="font-family: MathJax_Main; padding-left: 0.22em;">+</span><span class="mn" id="MathJax-Span-3940" style="font-family: MathJax_Main; padding-left: 0.22em;">1</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.466em 1000.003em 2.659em -0.485em); top: -2.22em; left: 0.003em;"><span class="mtd" id="MathJax-Span-3941"><span class="mrow" id="MathJax-Span-3942"><span class="texatom" id="MathJax-Span-3943"><span class="mrow" id="MathJax-Span-3944"><span class="mi" id="MathJax-Span-3945" style="font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-3946" style="font-family: MathJax_Main; padding-left: 0.274em;">=</span><span class="mn" id="MathJax-Span-3947" style="font-family: MathJax_Main; padding-left: 0.274em;">4</span><span class="mi" id="MathJax-Span-3948" style="font-family: MathJax_Math-italic;">x</span><span class="mo" id="MathJax-Span-3949" style="font-family: MathJax_Main;">;</span></span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span><span style="position: absolute; clip: rect(1.683em 1000.003em 2.659em -0.485em); top: -0.81em; left: 0.003em;"><span class="mtd" id="MathJax-Span-3950"><span class="mrow" id="MathJax-Span-3951"><span class="mi" id="MathJax-Span-3952" style="font-family: MathJax_Math-italic;">y<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-3953" style="font-family: MathJax_Main; padding-left: 0.22em;">−</span><span class="mi" id="MathJax-Span-3954" style="font-family: MathJax_Math-italic; padding-left: 0.22em;">z<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-3955" style="font-family: MathJax_Main; padding-left: 0.274em;">=</span><span class="mi" id="MathJax-Span-3956" style="font-family: MathJax_Math-italic; padding-left: 0.274em;">x</span><span class="mo" id="MathJax-Span-3957" style="font-family: MathJax_Main;">;</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="display: inline-block; width: 0px; height: 4.827em;"></span></span></span></span></span></span><span style="display: inline-block; width: 0px; height: 4.447em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 4.87em; vertical-align: -2.13em;"></span></span></nobr></span></li>
  </ol>
</blockquote>


<p></p><p> <br>
</p><p></p>


<h1 id="字体"><strong>字体:</strong></h1>


<table>
<thead>
<tr>
  <th>语法</th>
  <th>字体</th>
  <th>样例</th>
  <th>效果</th>
</tr>
</thead>
<tbody><tr>
  <td>\rm</td>
  <td>罗马体</td>
  <td>{<span>$</span>\rm 你好。World,123<span>$</span>}</td>
  <td>{<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-599-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4160" style="width: 9.163em; display: inline-block;"><span style="display: inline-block; position: relative; width: 7.428em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4161"><span class="texatom" id="MathJax-Span-4162"><span class="mrow" id="MathJax-Span-4163"><span class="mo" id="MathJax-Span-4164"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">你</span></span></span></span><span class="texatom" id="MathJax-Span-4165"><span class="mrow" id="MathJax-Span-4166"><span class="mo" id="MathJax-Span-4167"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">好</span></span></span></span><span class="texatom" id="MathJax-Span-4168"><span class="mrow" id="MathJax-Span-4169"><span class="mo" id="MathJax-Span-4170"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">,</span></span></span></span><span class="mi" id="MathJax-Span-4171" style="font-family: MathJax_Main;">W</span><span class="mi" id="MathJax-Span-4172" style="font-family: MathJax_Main;">o</span><span class="mi" id="MathJax-Span-4173" style="font-family: MathJax_Main;">r</span><span class="mi" id="MathJax-Span-4174" style="font-family: MathJax_Main;">l</span><span class="mi" id="MathJax-Span-4175" style="font-family: MathJax_Main;">d</span><span class="texatom" id="MathJax-Span-4176"><span class="mrow" id="MathJax-Span-4177"><span class="mo" id="MathJax-Span-4178"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">,</span></span></span></span><span class="mn" id="MathJax-Span-4179" style="font-family: MathJax_Main;">123</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.337em; vertical-align: -0.33em;"></span></span></nobr></span>}</td>
</tr>
<tr>
  <td>\bf</td>
  <td>黑体</td>
  <td>{<span>$</span>\bf 你好,World,123<span>$</span>}</td>
  <td>{<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-600-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4180" style="width: 10.138em; display: inline-block;"><span style="display: inline-block; position: relative; width: 8.241em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4181"><span class="texatom" id="MathJax-Span-4182"><span class="mrow" id="MathJax-Span-4183"><span class="mo" id="MathJax-Span-4184"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: bold;">你</span></span></span></span><span class="texatom" id="MathJax-Span-4185"><span class="mrow" id="MathJax-Span-4186"><span class="mo" id="MathJax-Span-4187"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: bold;">好</span></span></span></span><span class="texatom" id="MathJax-Span-4188"><span class="mrow" id="MathJax-Span-4189"><span class="mo" id="MathJax-Span-4190"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: bold;">。</span></span></span></span><span class="mi" id="MathJax-Span-4191" style="font-family: MathJax_Main-bold;">W</span><span class="mi" id="MathJax-Span-4192" style="font-family: MathJax_Main-bold;">o</span><span class="mi" id="MathJax-Span-4193" style="font-family: MathJax_Main-bold;">r</span><span class="mi" id="MathJax-Span-4194" style="font-family: MathJax_Main-bold;">l</span><span class="mi" id="MathJax-Span-4195" style="font-family: MathJax_Main-bold;">d</span><span class="texatom" id="MathJax-Span-4196"><span class="mrow" id="MathJax-Span-4197"><span class="mo" id="MathJax-Span-4198"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: bold;">。</span></span></span></span><span class="mn" id="MathJax-Span-4199" style="font-family: MathJax_Main-bold;">1<span style="font-family: MathJax_Main-bold;">2</span><span style="font-family: MathJax_Main-bold;">3</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.337em; vertical-align: -0.33em;"></span></span></nobr></span>}</td>
</tr>
<tr>
  <td>\Bbb</td>
  <td>黑板粗体字</td>
  <td>{<span>$</span>\Bbb 你好,World,123<span>$</span>}</td>
  <td>{<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-601-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4200" style="width: 9.217em; display: inline-block;"><span style="display: inline-block; position: relative; width: 7.482em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4201"><span class="texatom" id="MathJax-Span-4202"><span class="mrow" id="MathJax-Span-4203"><span class="texatom" id="MathJax-Span-4204"><span class="mrow" id="MathJax-Span-4205"><span class="mo" id="MathJax-Span-4206"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">你</span></span></span></span></span></span><span class="texatom" id="MathJax-Span-4207"><span class="mrow" id="MathJax-Span-4208"><span class="mo" id="MathJax-Span-4209"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">好</span></span></span></span><span class="texatom" id="MathJax-Span-4210"><span class="mrow" id="MathJax-Span-4211"><span class="mo" id="MathJax-Span-4212"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">,</span></span></span></span><span class="mi" id="MathJax-Span-4213" style="font-family: MathJax_Math-italic;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4214" style="font-family: MathJax_Math-italic;">o</span><span class="mi" id="MathJax-Span-4215" style="font-family: MathJax_Math-italic;">r</span><span class="mi" id="MathJax-Span-4216" style="font-family: MathJax_Math-italic;">l</span><span class="mi" id="MathJax-Span-4217" style="font-family: MathJax_Math-italic;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="texatom" id="MathJax-Span-4218"><span class="mrow" id="MathJax-Span-4219"><span class="mo" id="MathJax-Span-4220"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">,</span></span></span></span><span class="mn" id="MathJax-Span-4221" style="font-family: MathJax_Main;">123</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.337em; vertical-align: -0.33em;"></span></span></nobr></span>}</td>
</tr>
<tr>
  <td>\mit</td>
  <td>数学斜体</td>
  <td>{<span>$</span>\mit 你好,World,123<span>$</span>}</td>
  <td>{<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-602-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4222" style="width: 9.217em; display: inline-block;"><span style="display: inline-block; position: relative; width: 7.482em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4223"><span class="texatom" id="MathJax-Span-4224"><span class="mrow" id="MathJax-Span-4225"><span class="mo" id="MathJax-Span-4226"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: italic; font-weight: normal;">你</span></span></span></span><span class="texatom" id="MathJax-Span-4227"><span class="mrow" id="MathJax-Span-4228"><span class="mo" id="MathJax-Span-4229"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: italic; font-weight: normal;">好</span></span></span></span><span class="texatom" id="MathJax-Span-4230"><span class="mrow" id="MathJax-Span-4231"><span class="mo" id="MathJax-Span-4232"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: italic; font-weight: normal;">。</span></span></span></span><span class="mi" id="MathJax-Span-4233" style="font-family: MathJax_Math-italic;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4234" style="font-family: MathJax_Math-italic;">o</span><span class="mi" id="MathJax-Span-4235" style="font-family: MathJax_Math-italic;">r</span><span class="mi" id="MathJax-Span-4236" style="font-family: MathJax_Math-italic;">l</span><span class="mi" id="MathJax-Span-4237" style="font-family: MathJax_Math-italic;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="texatom" id="MathJax-Span-4238"><span class="mrow" id="MathJax-Span-4239"><span class="mo" id="MathJax-Span-4240"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: italic; font-weight: normal;">。</span></span></span></span><span class="mn" id="MathJax-Span-4241" style="font-family: MathJax_Main-italic;">1<span style="font-family: MathJax_Main-italic;">2</span><span style="font-family: MathJax_Main-italic;">3</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.337em; vertical-align: -0.33em;"></span></span></nobr></span>}</td>
</tr>
<tr>
  <td>\scr</td>
  <td>小体大写字母</td>
  <td>{<span>$</span>\scr 你好,World。123<span>$</span>}</td>
  <td>{<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-603-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4242" style="width: 9.163em; display: inline-block;"><span style="display: inline-block; position: relative; width: 7.428em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.358em 1000.003em 2.713em -0.485em); top: -2.328em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4243"><span class="texatom" id="MathJax-Span-4244"><span class="mrow" id="MathJax-Span-4245"><span class="mo" id="MathJax-Span-4246"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">你</span></span></span></span><span class="texatom" id="MathJax-Span-4247"><span class="mrow" id="MathJax-Span-4248"><span class="mo" id="MathJax-Span-4249"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">好</span></span></span></span><span class="texatom" id="MathJax-Span-4250"><span class="mrow" id="MathJax-Span-4251"><span class="mo" id="MathJax-Span-4252"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">,</span></span></span></span><span class="mi" id="MathJax-Span-4253" style="font-family: MathJax_Script;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.22em;"></span></span><span class="mi" id="MathJax-Span-4254" style="font-family: MathJax_Main;">o</span><span class="mi" id="MathJax-Span-4255" style="font-family: MathJax_Main;">r</span><span class="mi" id="MathJax-Span-4256" style="font-family: MathJax_Main;">l</span><span class="mi" id="MathJax-Span-4257" style="font-family: MathJax_Main;">d</span><span class="texatom" id="MathJax-Span-4258"><span class="mrow" id="MathJax-Span-4259"><span class="mo" id="MathJax-Span-4260"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">,</span></span></span></span><span class="mn" id="MathJax-Span-4261" style="font-family: MathJax_Main;">123</span></span><span style="display: inline-block; width: 0px; height: 2.333em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.337em; vertical-align: -0.33em;"></span></span></nobr></span>}</td>
</tr>
<tr>
  <td>\it</td>
  <td>意大利体</td>
  <td>{<span>$</span>\it 你好,World,123<span>$</span>}</td>
  <td>{<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-604-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4262" style="width: 9.108em; display: inline-block;"><span style="display: inline-block; position: relative; width: 7.374em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4263"><span class="texatom" id="MathJax-Span-4264"><span class="mrow" id="MathJax-Span-4265"><span class="mo" id="MathJax-Span-4266"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: italic; font-weight: normal;">你</span></span></span></span><span class="texatom" id="MathJax-Span-4267"><span class="mrow" id="MathJax-Span-4268"><span class="mo" id="MathJax-Span-4269"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: italic; font-weight: normal;">好</span></span></span></span><span class="texatom" id="MathJax-Span-4270"><span class="mrow" id="MathJax-Span-4271"><span class="mo" id="MathJax-Span-4272"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: italic; font-weight: normal;">,</span></span></span></span><span class="mi" id="MathJax-Span-4273" style="font-family: MathJax_Main-italic;">W</span><span class="mi" id="MathJax-Span-4274" style="font-family: MathJax_Main-italic;">o</span><span class="mi" id="MathJax-Span-4275" style="font-family: MathJax_Main-italic;">r</span><span class="mi" id="MathJax-Span-4276" style="font-family: MathJax_Main-italic;">l</span><span class="mi" id="MathJax-Span-4277" style="font-family: MathJax_Main-italic;">d</span><span class="texatom" id="MathJax-Span-4278"><span class="mrow" id="MathJax-Span-4279"><span class="mo" id="MathJax-Span-4280"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: italic; font-weight: normal;">。</span></span></span></span><span class="mn" id="MathJax-Span-4281" style="font-family: MathJax_Main-italic;">1<span style="font-family: MathJax_Main-italic;">2</span><span style="font-family: MathJax_Main-italic;">3</span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.337em; vertical-align: -0.33em;"></span></span></nobr></span>}</td>
</tr>
<tr>
  <td>\cal</td>
  <td>花体</td>
  <td>{<span>$</span>\cal 你好,World。123<span>$</span>}</td>
  <td>{<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-605-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4282" style="width: 9.217em; display: inline-block;"><span style="display: inline-block; position: relative; width: 7.482em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4283"><span class="texatom" id="MathJax-Span-4284"><span class="mrow" id="MathJax-Span-4285"><span class="mo" id="MathJax-Span-4286"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">你</span></span></span></span><span class="texatom" id="MathJax-Span-4287"><span class="mrow" id="MathJax-Span-4288"><span class="mo" id="MathJax-Span-4289"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">好</span></span></span></span><span class="texatom" id="MathJax-Span-4290"><span class="mrow" id="MathJax-Span-4291"><span class="mo" id="MathJax-Span-4292"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">。</span></span></span></span><span class="mi" id="MathJax-Span-4293" style="font-family: MathJax_Caligraphic;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4294" style="font-family: MathJax_Math-italic;">o</span><span class="mi" id="MathJax-Span-4295" style="font-family: MathJax_Math-italic;">r</span><span class="mi" id="MathJax-Span-4296" style="font-family: MathJax_Math-italic;">l</span><span class="mi" id="MathJax-Span-4297" style="font-family: MathJax_Math-italic;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="texatom" id="MathJax-Span-4298"><span class="mrow" id="MathJax-Span-4299"><span class="mo" id="MathJax-Span-4300"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">,</span></span></span></span><span class="mn" id="MathJax-Span-4301" style="font-family: MathJax_Caligraphic;">123</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.403em; vertical-align: -0.33em;"></span></span></nobr></span>}</td>
</tr>
<tr>
  <td>\sf</td>
  <td>等线体</td>
  <td>{<span>$</span>\sf 你好,World。123<span>$</span>}</td>
  <td>{<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-606-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4302" style="width: 8.837em; display: inline-block;"><span style="display: inline-block; position: relative; width: 7.157em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4303"><span class="texatom" id="MathJax-Span-4304"><span class="mrow" id="MathJax-Span-4305"><span class="mo" id="MathJax-Span-4306"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">你</span></span></span></span><span class="texatom" id="MathJax-Span-4307"><span class="mrow" id="MathJax-Span-4308"><span class="mo" id="MathJax-Span-4309"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">好</span></span></span></span><span class="texatom" id="MathJax-Span-4310"><span class="mrow" id="MathJax-Span-4311"><span class="mo" id="MathJax-Span-4312"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">。</span></span></span></span><span class="mi" id="MathJax-Span-4313" style="font-family: MathJax_SansSerif;">W</span><span class="mi" id="MathJax-Span-4314" style="font-family: MathJax_SansSerif;">o</span><span class="mi" id="MathJax-Span-4315" style="font-family: MathJax_SansSerif;">r</span><span class="mi" id="MathJax-Span-4316" style="font-family: MathJax_SansSerif;">l</span><span class="mi" id="MathJax-Span-4317" style="font-family: MathJax_SansSerif;">d</span><span class="texatom" id="MathJax-Span-4318"><span class="mrow" id="MathJax-Span-4319"><span class="mo" id="MathJax-Span-4320"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">。</span></span></span></span><span class="mn" id="MathJax-Span-4321" style="font-family: MathJax_SansSerif;">123</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.337em; vertical-align: -0.33em;"></span></span></nobr></span>}</td>
</tr>
<tr>
  <td>\tt</td>
  <td>打字机字体</td>
  <td>{<span>$</span>\tt 你好,World。123<span>$</span>}</td>
  <td>{<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-607-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4322" style="width: 8.837em; display: inline-block;"><span style="display: inline-block; position: relative; width: 7.157em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4323"><span class="texatom" id="MathJax-Span-4324"><span class="mrow" id="MathJax-Span-4325"><span class="mo" id="MathJax-Span-4326"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">你</span></span></span></span><span class="texatom" id="MathJax-Span-4327"><span class="mrow" id="MathJax-Span-4328"><span class="mo" id="MathJax-Span-4329"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">好</span></span></span></span><span class="texatom" id="MathJax-Span-4330"><span class="mrow" id="MathJax-Span-4331"><span class="mo" id="MathJax-Span-4332"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">,</span></span></span></span><span class="mi" id="MathJax-Span-4333" style="font-family: MathJax_Typewriter;">W</span><span class="mi" id="MathJax-Span-4334" style="font-family: MathJax_Typewriter;">o</span><span class="mi" id="MathJax-Span-4335" style="font-family: MathJax_Typewriter;">r</span><span class="mi" id="MathJax-Span-4336" style="font-family: MathJax_Typewriter;">l</span><span class="mi" id="MathJax-Span-4337" style="font-family: MathJax_Typewriter;">d</span><span class="texatom" id="MathJax-Span-4338"><span class="mrow" id="MathJax-Span-4339"><span class="mo" id="MathJax-Span-4340"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">,</span></span></span></span><span class="mn" id="MathJax-Span-4341" style="font-family: MathJax_Typewriter;">123</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.337em; vertical-align: -0.33em;"></span></span></nobr></span>}</td>
</tr>
<tr>
  <td>\frak</td>
  <td>Fraktur字母(一种德国字体)</td>
  <td>{<span>$</span>\frak 你好,World,123<span>$</span>}</td>
  <td>{<span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-608-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4342" style="width: 9.163em; display: inline-block;"><span style="display: inline-block; position: relative; width: 7.428em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.304em 1000.003em 2.659em -0.485em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4343"><span class="texatom" id="MathJax-Span-4344"><span class="mrow" id="MathJax-Span-4345"><span class="mo" id="MathJax-Span-4346"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">你</span></span></span></span><span class="texatom" id="MathJax-Span-4347"><span class="mrow" id="MathJax-Span-4348"><span class="mo" id="MathJax-Span-4349"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">好</span></span></span></span><span class="texatom" id="MathJax-Span-4350"><span class="mrow" id="MathJax-Span-4351"><span class="mo" id="MathJax-Span-4352"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">,</span></span></span></span><span class="mi" id="MathJax-Span-4353" style="font-family: MathJax_Fraktur;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mi" id="MathJax-Span-4354" style="font-family: MathJax_Fraktur;">o</span><span class="mi" id="MathJax-Span-4355" style="font-family: MathJax_Fraktur;">r</span><span class="mi" id="MathJax-Span-4356" style="font-family: MathJax_Fraktur;">l</span><span class="mi" id="MathJax-Span-4357" style="font-family: MathJax_Fraktur;">d</span><span class="texatom" id="MathJax-Span-4358"><span class="mrow" id="MathJax-Span-4359"><span class="mo" id="MathJax-Span-4360"><span style="font-family: STIXGeneral, 'Arial Unicode MS', serif; font-size: 81%; font-style: normal; font-weight: normal;">,</span></span></span></span><span class="mn" id="MathJax-Span-4361" style="font-family: MathJax_Fraktur;">123</span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.337em; vertical-align: -0.33em;"></span></span></nobr></span>}</td>
</tr>
</tbody></table>




<p></p><p> <br>
</p><p></p>


<h1 id="颜色"><strong>颜色:</strong></h1>


<table>
<thead>
<tr>
  <th>代码</th>
  <th>效果</th>
</tr>
</thead>
<tbody><tr>
  <td><span>$</span>\color{black}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-609-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4362" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4363"><span class="mstyle" id="MathJax-Span-4364" style="color: black;"><span class="mrow" id="MathJax-Span-4365" style="color: black;"><span class="mi" id="MathJax-Span-4366" style="font-family: MathJax_Math-italic; color: black;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4367" style="font-family: MathJax_Math-italic; color: black;">e</span><span class="mi" id="MathJax-Span-4368" style="font-family: MathJax_Math-italic; color: black;">l</span><span class="mi" id="MathJax-Span-4369" style="font-family: MathJax_Math-italic; color: black;">l</span><span class="mi" id="MathJax-Span-4370" style="font-family: MathJax_Math-italic; color: black;">o</span><span class="mi" id="MathJax-Span-4371" style="font-family: MathJax_Math-italic; color: black;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4372" style="font-family: MathJax_Math-italic; color: black;">o</span><span class="mi" id="MathJax-Span-4373" style="font-family: MathJax_Math-italic; color: black;">r</span><span class="mi" id="MathJax-Span-4374" style="font-family: MathJax_Math-italic; color: black;">l</span><span class="mi" id="MathJax-Span-4375" style="font-family: MathJax_Math-italic; color: black;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4376" style="font-family: MathJax_Main; color: black;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{gray}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-610-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4377" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4378"><span class="mstyle" id="MathJax-Span-4379" style="color: gray;"><span class="mrow" id="MathJax-Span-4380" style="color: gray;"><span class="mi" id="MathJax-Span-4381" style="font-family: MathJax_Math-italic; color: gray;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4382" style="font-family: MathJax_Math-italic; color: gray;">e</span><span class="mi" id="MathJax-Span-4383" style="font-family: MathJax_Math-italic; color: gray;">l</span><span class="mi" id="MathJax-Span-4384" style="font-family: MathJax_Math-italic; color: gray;">l</span><span class="mi" id="MathJax-Span-4385" style="font-family: MathJax_Math-italic; color: gray;">o</span><span class="mi" id="MathJax-Span-4386" style="font-family: MathJax_Math-italic; color: gray;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4387" style="font-family: MathJax_Math-italic; color: gray;">o</span><span class="mi" id="MathJax-Span-4388" style="font-family: MathJax_Math-italic; color: gray;">r</span><span class="mi" id="MathJax-Span-4389" style="font-family: MathJax_Math-italic; color: gray;">l</span><span class="mi" id="MathJax-Span-4390" style="font-family: MathJax_Math-italic; color: gray;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4391" style="font-family: MathJax_Main; color: gray;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{silver}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-611-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4392" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4393"><span class="mstyle" id="MathJax-Span-4394" style="color: silver;"><span class="mrow" id="MathJax-Span-4395" style="color: silver;"><span class="mi" id="MathJax-Span-4396" style="font-family: MathJax_Math-italic; color: silver;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4397" style="font-family: MathJax_Math-italic; color: silver;">e</span><span class="mi" id="MathJax-Span-4398" style="font-family: MathJax_Math-italic; color: silver;">l</span><span class="mi" id="MathJax-Span-4399" style="font-family: MathJax_Math-italic; color: silver;">l</span><span class="mi" id="MathJax-Span-4400" style="font-family: MathJax_Math-italic; color: silver;">o</span><span class="mi" id="MathJax-Span-4401" style="font-family: MathJax_Math-italic; color: silver;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4402" style="font-family: MathJax_Math-italic; color: silver;">o</span><span class="mi" id="MathJax-Span-4403" style="font-family: MathJax_Math-italic; color: silver;">r</span><span class="mi" id="MathJax-Span-4404" style="font-family: MathJax_Math-italic; color: silver;">l</span><span class="mi" id="MathJax-Span-4405" style="font-family: MathJax_Math-italic; color: silver;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4406" style="font-family: MathJax_Main; color: silver;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{white}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-612-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4407" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4408"><span class="mstyle" id="MathJax-Span-4409" style="color: white;"><span class="mrow" id="MathJax-Span-4410" style="color: white;"><span class="mi" id="MathJax-Span-4411" style="font-family: MathJax_Math-italic; color: white;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4412" style="font-family: MathJax_Math-italic; color: white;">e</span><span class="mi" id="MathJax-Span-4413" style="font-family: MathJax_Math-italic; color: white;">l</span><span class="mi" id="MathJax-Span-4414" style="font-family: MathJax_Math-italic; color: white;">l</span><span class="mi" id="MathJax-Span-4415" style="font-family: MathJax_Math-italic; color: white;">o</span><span class="mi" id="MathJax-Span-4416" style="font-family: MathJax_Math-italic; color: white;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4417" style="font-family: MathJax_Math-italic; color: white;">o</span><span class="mi" id="MathJax-Span-4418" style="font-family: MathJax_Math-italic; color: white;">r</span><span class="mi" id="MathJax-Span-4419" style="font-family: MathJax_Math-italic; color: white;">l</span><span class="mi" id="MathJax-Span-4420" style="font-family: MathJax_Math-italic; color: white;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4421" style="font-family: MathJax_Main; color: white;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{maroon}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-613-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4422" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4423"><span class="mstyle" id="MathJax-Span-4424" style="color: maroon;"><span class="mrow" id="MathJax-Span-4425" style="color: maroon;"><span class="mi" id="MathJax-Span-4426" style="font-family: MathJax_Math-italic; color: maroon;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4427" style="font-family: MathJax_Math-italic; color: maroon;">e</span><span class="mi" id="MathJax-Span-4428" style="font-family: MathJax_Math-italic; color: maroon;">l</span><span class="mi" id="MathJax-Span-4429" style="font-family: MathJax_Math-italic; color: maroon;">l</span><span class="mi" id="MathJax-Span-4430" style="font-family: MathJax_Math-italic; color: maroon;">o</span><span class="mi" id="MathJax-Span-4431" style="font-family: MathJax_Math-italic; color: maroon;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4432" style="font-family: MathJax_Math-italic; color: maroon;">o</span><span class="mi" id="MathJax-Span-4433" style="font-family: MathJax_Math-italic; color: maroon;">r</span><span class="mi" id="MathJax-Span-4434" style="font-family: MathJax_Math-italic; color: maroon;">l</span><span class="mi" id="MathJax-Span-4435" style="font-family: MathJax_Math-italic; color: maroon;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4436" style="font-family: MathJax_Main; color: maroon;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{red}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-614-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4437" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4438"><span class="mstyle" id="MathJax-Span-4439" style="color: red;"><span class="mrow" id="MathJax-Span-4440" style="color: red;"><span class="mi" id="MathJax-Span-4441" style="font-family: MathJax_Math-italic; color: red;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4442" style="font-family: MathJax_Math-italic; color: red;">e</span><span class="mi" id="MathJax-Span-4443" style="font-family: MathJax_Math-italic; color: red;">l</span><span class="mi" id="MathJax-Span-4444" style="font-family: MathJax_Math-italic; color: red;">l</span><span class="mi" id="MathJax-Span-4445" style="font-family: MathJax_Math-italic; color: red;">o</span><span class="mi" id="MathJax-Span-4446" style="font-family: MathJax_Math-italic; color: red;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4447" style="font-family: MathJax_Math-italic; color: red;">o</span><span class="mi" id="MathJax-Span-4448" style="font-family: MathJax_Math-italic; color: red;">r</span><span class="mi" id="MathJax-Span-4449" style="font-family: MathJax_Math-italic; color: red;">l</span><span class="mi" id="MathJax-Span-4450" style="font-family: MathJax_Math-italic; color: red;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4451" style="font-family: MathJax_Main; color: red;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{yellow}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-615-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4452" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4453"><span class="mstyle" id="MathJax-Span-4454" style="color: yellow;"><span class="mrow" id="MathJax-Span-4455" style="color: yellow;"><span class="mi" id="MathJax-Span-4456" style="font-family: MathJax_Math-italic; color: yellow;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4457" style="font-family: MathJax_Math-italic; color: yellow;">e</span><span class="mi" id="MathJax-Span-4458" style="font-family: MathJax_Math-italic; color: yellow;">l</span><span class="mi" id="MathJax-Span-4459" style="font-family: MathJax_Math-italic; color: yellow;">l</span><span class="mi" id="MathJax-Span-4460" style="font-family: MathJax_Math-italic; color: yellow;">o</span><span class="mi" id="MathJax-Span-4461" style="font-family: MathJax_Math-italic; color: yellow;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4462" style="font-family: MathJax_Math-italic; color: yellow;">o</span><span class="mi" id="MathJax-Span-4463" style="font-family: MathJax_Math-italic; color: yellow;">r</span><span class="mi" id="MathJax-Span-4464" style="font-family: MathJax_Math-italic; color: yellow;">l</span><span class="mi" id="MathJax-Span-4465" style="font-family: MathJax_Math-italic; color: yellow;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4466" style="font-family: MathJax_Main; color: yellow;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{lime}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-616-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4467" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4468"><span class="mstyle" id="MathJax-Span-4469" style="color: lime;"><span class="mrow" id="MathJax-Span-4470" style="color: lime;"><span class="mi" id="MathJax-Span-4471" style="font-family: MathJax_Math-italic; color: lime;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4472" style="font-family: MathJax_Math-italic; color: lime;">e</span><span class="mi" id="MathJax-Span-4473" style="font-family: MathJax_Math-italic; color: lime;">l</span><span class="mi" id="MathJax-Span-4474" style="font-family: MathJax_Math-italic; color: lime;">l</span><span class="mi" id="MathJax-Span-4475" style="font-family: MathJax_Math-italic; color: lime;">o</span><span class="mi" id="MathJax-Span-4476" style="font-family: MathJax_Math-italic; color: lime;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4477" style="font-family: MathJax_Math-italic; color: lime;">o</span><span class="mi" id="MathJax-Span-4478" style="font-family: MathJax_Math-italic; color: lime;">r</span><span class="mi" id="MathJax-Span-4479" style="font-family: MathJax_Math-italic; color: lime;">l</span><span class="mi" id="MathJax-Span-4480" style="font-family: MathJax_Math-italic; color: lime;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4481" style="font-family: MathJax_Main; color: lime;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{olive}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-617-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4482" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4483"><span class="mstyle" id="MathJax-Span-4484" style="color: olive;"><span class="mrow" id="MathJax-Span-4485" style="color: olive;"><span class="mi" id="MathJax-Span-4486" style="font-family: MathJax_Math-italic; color: olive;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4487" style="font-family: MathJax_Math-italic; color: olive;">e</span><span class="mi" id="MathJax-Span-4488" style="font-family: MathJax_Math-italic; color: olive;">l</span><span class="mi" id="MathJax-Span-4489" style="font-family: MathJax_Math-italic; color: olive;">l</span><span class="mi" id="MathJax-Span-4490" style="font-family: MathJax_Math-italic; color: olive;">o</span><span class="mi" id="MathJax-Span-4491" style="font-family: MathJax_Math-italic; color: olive;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4492" style="font-family: MathJax_Math-italic; color: olive;">o</span><span class="mi" id="MathJax-Span-4493" style="font-family: MathJax_Math-italic; color: olive;">r</span><span class="mi" id="MathJax-Span-4494" style="font-family: MathJax_Math-italic; color: olive;">l</span><span class="mi" id="MathJax-Span-4495" style="font-family: MathJax_Math-italic; color: olive;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4496" style="font-family: MathJax_Main; color: olive;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{green}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-618-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4497" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4498"><span class="mstyle" id="MathJax-Span-4499" style="color: green;"><span class="mrow" id="MathJax-Span-4500" style="color: green;"><span class="mi" id="MathJax-Span-4501" style="font-family: MathJax_Math-italic; color: green;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4502" style="font-family: MathJax_Math-italic; color: green;">e</span><span class="mi" id="MathJax-Span-4503" style="font-family: MathJax_Math-italic; color: green;">l</span><span class="mi" id="MathJax-Span-4504" style="font-family: MathJax_Math-italic; color: green;">l</span><span class="mi" id="MathJax-Span-4505" style="font-family: MathJax_Math-italic; color: green;">o</span><span class="mi" id="MathJax-Span-4506" style="font-family: MathJax_Math-italic; color: green;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4507" style="font-family: MathJax_Math-italic; color: green;">o</span><span class="mi" id="MathJax-Span-4508" style="font-family: MathJax_Math-italic; color: green;">r</span><span class="mi" id="MathJax-Span-4509" style="font-family: MathJax_Math-italic; color: green;">l</span><span class="mi" id="MathJax-Span-4510" style="font-family: MathJax_Math-italic; color: green;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4511" style="font-family: MathJax_Main; color: green;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{teal}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-619-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4512" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4513"><span class="mstyle" id="MathJax-Span-4514" style="color: teal;"><span class="mrow" id="MathJax-Span-4515" style="color: teal;"><span class="mi" id="MathJax-Span-4516" style="font-family: MathJax_Math-italic; color: teal;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4517" style="font-family: MathJax_Math-italic; color: teal;">e</span><span class="mi" id="MathJax-Span-4518" style="font-family: MathJax_Math-italic; color: teal;">l</span><span class="mi" id="MathJax-Span-4519" style="font-family: MathJax_Math-italic; color: teal;">l</span><span class="mi" id="MathJax-Span-4520" style="font-family: MathJax_Math-italic; color: teal;">o</span><span class="mi" id="MathJax-Span-4521" style="font-family: MathJax_Math-italic; color: teal;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4522" style="font-family: MathJax_Math-italic; color: teal;">o</span><span class="mi" id="MathJax-Span-4523" style="font-family: MathJax_Math-italic; color: teal;">r</span><span class="mi" id="MathJax-Span-4524" style="font-family: MathJax_Math-italic; color: teal;">l</span><span class="mi" id="MathJax-Span-4525" style="font-family: MathJax_Math-italic; color: teal;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4526" style="font-family: MathJax_Main; color: teal;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{aqua}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-620-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4527" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4528"><span class="mstyle" id="MathJax-Span-4529" style="color: aqua;"><span class="mrow" id="MathJax-Span-4530" style="color: aqua;"><span class="mi" id="MathJax-Span-4531" style="font-family: MathJax_Math-italic; color: aqua;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4532" style="font-family: MathJax_Math-italic; color: aqua;">e</span><span class="mi" id="MathJax-Span-4533" style="font-family: MathJax_Math-italic; color: aqua;">l</span><span class="mi" id="MathJax-Span-4534" style="font-family: MathJax_Math-italic; color: aqua;">l</span><span class="mi" id="MathJax-Span-4535" style="font-family: MathJax_Math-italic; color: aqua;">o</span><span class="mi" id="MathJax-Span-4536" style="font-family: MathJax_Math-italic; color: aqua;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4537" style="font-family: MathJax_Math-italic; color: aqua;">o</span><span class="mi" id="MathJax-Span-4538" style="font-family: MathJax_Math-italic; color: aqua;">r</span><span class="mi" id="MathJax-Span-4539" style="font-family: MathJax_Math-italic; color: aqua;">l</span><span class="mi" id="MathJax-Span-4540" style="font-family: MathJax_Math-italic; color: aqua;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4541" style="font-family: MathJax_Main; color: aqua;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{blue}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-621-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4542" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4543"><span class="mstyle" id="MathJax-Span-4544" style="color: blue;"><span class="mrow" id="MathJax-Span-4545" style="color: blue;"><span class="mi" id="MathJax-Span-4546" style="font-family: MathJax_Math-italic; color: blue;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4547" style="font-family: MathJax_Math-italic; color: blue;">e</span><span class="mi" id="MathJax-Span-4548" style="font-family: MathJax_Math-italic; color: blue;">l</span><span class="mi" id="MathJax-Span-4549" style="font-family: MathJax_Math-italic; color: blue;">l</span><span class="mi" id="MathJax-Span-4550" style="font-family: MathJax_Math-italic; color: blue;">o</span><span class="mi" id="MathJax-Span-4551" style="font-family: MathJax_Math-italic; color: blue;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4552" style="font-family: MathJax_Math-italic; color: blue;">o</span><span class="mi" id="MathJax-Span-4553" style="font-family: MathJax_Math-italic; color: blue;">r</span><span class="mi" id="MathJax-Span-4554" style="font-family: MathJax_Math-italic; color: blue;">l</span><span class="mi" id="MathJax-Span-4555" style="font-family: MathJax_Math-italic; color: blue;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4556" style="font-family: MathJax_Main; color: blue;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{navy}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-622-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4557" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4558"><span class="mstyle" id="MathJax-Span-4559" style="color: navy;"><span class="mrow" id="MathJax-Span-4560" style="color: navy;"><span class="mi" id="MathJax-Span-4561" style="font-family: MathJax_Math-italic; color: navy;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4562" style="font-family: MathJax_Math-italic; color: navy;">e</span><span class="mi" id="MathJax-Span-4563" style="font-family: MathJax_Math-italic; color: navy;">l</span><span class="mi" id="MathJax-Span-4564" style="font-family: MathJax_Math-italic; color: navy;">l</span><span class="mi" id="MathJax-Span-4565" style="font-family: MathJax_Math-italic; color: navy;">o</span><span class="mi" id="MathJax-Span-4566" style="font-family: MathJax_Math-italic; color: navy;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4567" style="font-family: MathJax_Math-italic; color: navy;">o</span><span class="mi" id="MathJax-Span-4568" style="font-family: MathJax_Math-italic; color: navy;">r</span><span class="mi" id="MathJax-Span-4569" style="font-family: MathJax_Math-italic; color: navy;">l</span><span class="mi" id="MathJax-Span-4570" style="font-family: MathJax_Math-italic; color: navy;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4571" style="font-family: MathJax_Main; color: navy;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{purple}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-623-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4572" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4573"><span class="mstyle" id="MathJax-Span-4574" style="color: purple;"><span class="mrow" id="MathJax-Span-4575" style="color: purple;"><span class="mi" id="MathJax-Span-4576" style="font-family: MathJax_Math-italic; color: purple;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4577" style="font-family: MathJax_Math-italic; color: purple;">e</span><span class="mi" id="MathJax-Span-4578" style="font-family: MathJax_Math-italic; color: purple;">l</span><span class="mi" id="MathJax-Span-4579" style="font-family: MathJax_Math-italic; color: purple;">l</span><span class="mi" id="MathJax-Span-4580" style="font-family: MathJax_Math-italic; color: purple;">o</span><span class="mi" id="MathJax-Span-4581" style="font-family: MathJax_Math-italic; color: purple;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4582" style="font-family: MathJax_Math-italic; color: purple;">o</span><span class="mi" id="MathJax-Span-4583" style="font-family: MathJax_Math-italic; color: purple;">r</span><span class="mi" id="MathJax-Span-4584" style="font-family: MathJax_Math-italic; color: purple;">l</span><span class="mi" id="MathJax-Span-4585" style="font-family: MathJax_Math-italic; color: purple;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4586" style="font-family: MathJax_Main; color: purple;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
<tr>
  <td><span>$</span>\color{fuchsia}{Hello World!}<span>$</span></td>
  <td><span class="MathJax_Preview"></span><span class="MathJax" id="MathJax-Element-624-Frame" role="textbox" aria-readonly="true"><nobr><span class="math" id="MathJax-Span-4587" style="width: 6.615em; display: inline-block;"><span style="display: inline-block; position: relative; width: 5.369em; height: 0px; font-size: 123%;"><span style="position: absolute; clip: rect(1.412em 1000.003em 2.442em -0.431em); top: -2.274em; left: 0.003em;"><span class="mrow" id="MathJax-Span-4588"><span class="mstyle" id="MathJax-Span-4589" style="color: fuchsia;"><span class="mrow" id="MathJax-Span-4590" style="color: fuchsia;"><span class="mi" id="MathJax-Span-4591" style="font-family: MathJax_Math-italic; color: fuchsia;">H<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.057em;"></span></span><span class="mi" id="MathJax-Span-4592" style="font-family: MathJax_Math-italic; color: fuchsia;">e</span><span class="mi" id="MathJax-Span-4593" style="font-family: MathJax_Math-italic; color: fuchsia;">l</span><span class="mi" id="MathJax-Span-4594" style="font-family: MathJax_Math-italic; color: fuchsia;">l</span><span class="mi" id="MathJax-Span-4595" style="font-family: MathJax_Math-italic; color: fuchsia;">o</span><span class="mi" id="MathJax-Span-4596" style="font-family: MathJax_Math-italic; color: fuchsia;">W<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.111em;"></span></span><span class="mi" id="MathJax-Span-4597" style="font-family: MathJax_Math-italic; color: fuchsia;">o</span><span class="mi" id="MathJax-Span-4598" style="font-family: MathJax_Math-italic; color: fuchsia;">r</span><span class="mi" id="MathJax-Span-4599" style="font-family: MathJax_Math-italic; color: fuchsia;">l</span><span class="mi" id="MathJax-Span-4600" style="font-family: MathJax_Math-italic; color: fuchsia;">d<span style="display: inline-block; overflow: hidden; height: 1px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-4601" style="font-family: MathJax_Main; color: fuchsia;">!</span></span></span></span><span style="display: inline-block; width: 0px; height: 2.279em;"></span></span></span><span style="border-left-width: 0.003em; border-left-style: solid; display: inline-block; overflow: hidden; width: 0px; height: 1.07em; vertical-align: -0.063em;"></span></span></nobr></span></td>
</tr>
</tbody></table>




<p></p><p> <br>
</p><p></p>


<h1 id="markdown快捷键"><strong>Markdown快捷键</strong></h1>


<table>
<thead>
<tr>
  <th>动作</th>
  <th>快捷键</th>
  <th></th>
  <th>动作</th>
  <th>快捷键</th>
</tr>
</thead>
<tbody><tr>
  <td>加粗</td>
  <td>Ctrl + B</td>
  <td></td>
  <td>撤销</td>
  <td>Ctrl + Z</td>
</tr>
<tr>
  <td>斜体</td>
  <td>Ctrl + I</td>
  <td></td>
  <td>重做</td>
  <td>Ctrl + Y</td>
</tr>
<tr>
  <td>横线</td>
  <td>Ctrl + R</td>
  <td></td>
  <td>引用</td>
  <td>Ctrl + Q</td>
</tr>
<tr>
  <td>插入链接</td>
  <td>Ctrl + L</td>
  <td></td>
  <td>插入代码</td>
  <td>Ctrl + K</td>
</tr>
<tr>
  <td>插入图片</td>
  <td>Ctrl + G</td>
  <td></td>
  <td>插入标题</td>
  <td>Ctrl + H</td>
</tr>
<tr>
  <td>有序列表</td>
  <td>Ctrl + O</td>
  <td></td>
  <td>无序列表</td>
  <td>Ctrl + U</td>
</tr>
</tbody></table>




<p></p><p> <br>
</p><p></p>


<h1 id="页内跳转"><strong>页内跳转</strong></h1>


<ol>
<li>先定义一个标识(即以下这行代码),并把它放到要跳转的地方。 <br>
<code>&lt;div id="footer"&gt;&lt;/div&gt;</code></li>
<li>然后把跳转链接放在随意地方,当点击这个跳转链接的时候变回跳到当前标识所在的位置。 <br>
<code>[跳转到数学公式](#footer)</code> <br>
比如我把标识代码放在<strong>数学公式</strong>的上一行,当点击<a href="#footer"><strong>跳转到数学公式</strong></a>的时候便会实现跳转。</li>
</ol>


<p></p><p> <br>
</p><p></p>


<hr>






<h1 id="參考文献">參考文献:</h1>


<ul>
<li><a href="http://blog.csdn.net/whqet/article/details/44277965">http://blog.csdn.net/whqet/article/details/44277965</a></li>
<li><a href="http://blog.csdn.net/lanxuezaipiao/article/details/44341645">http://blog.csdn.net/lanxuezaipiao/article/details/44341645</a></li>
<li><p><a href="http://mlworks.cn/posts/introduction-to-mathjax-and-latex-expression/">http://mlworks.cn/posts/introduction-to-mathjax-and-latex-expression/</a></p>


<p></p><p> <br>
</p><p> <br>
</p><p></p></li>
</ul>


<p>转载请注明出处,谢谢!(原文链接:<a href="http://blog.csdn.net/bone_ace/article/details/46400975">http://blog.csdn.net/bone_ace/article/details/46400975</a>)</p></div>
        
   
</div>
版权声明:本文为博主原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接和本声明。
本文链接:https://blog.csdn.net/sinat_32590125/article/details/79920866

智能推荐

typeof不好判断null、Array,Object等,自己封装一个类型判断方法,可精确判断_编程界明世隐的博客-程序员宅基地

这里参考了jQuery的做法:var class2type={}; //定义一个对象var typeArr = "Boolean Number String Function Array Date RegExp Object".split(" ");//将所有的类型放到一个数组for(var i=0,len=typeArr.length;i&lt;len;i++){ var name=typeArr[i]; class2type[ "[object " + name + "]" ] = nam

Object-c 二叉树的遍历(前序、中序、后序以及非递归遍历)_劉胡來的博客-程序员宅基地

二叉树的结构二叉树是树的特殊形式,它包含结点值(可空),左孩子结点(可空),右孩子结点(可空)。空树即三者均为空,当任一结点只有左孩子或右孩子时,这颗树的结构就与链表类似了。定义一个二叉树的结点代码清单如下:#import &lt;Foundation/Foundation.h&gt;[email protected] TreeNode : [email protected](nonatomic,assign) NSInteger value;@pro.

vs2015安装完打开是Blend ,没有窗口模板和控制台模板解决方案_无涯大者的博客-程序员宅基地_安装vs为啥会出现blend

vs2015安装完后,会默认打开的是Microsoft Blend for Visual Studio,据说blend for visual studio 这个并不是用于开发中写代码的,而是专门用来做WPF的界面设计的。写代码,还必须手动打开安装目录C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE里面有一...

redhat linux下挂载U盘和光盘_freedom2028的博客-程序员宅基地

U盘的挂载1.插入U盘。2.用fdisk -l查看磁盘信息[[email protected] usb]# fdisk -lDisk /dev/sda: 8589 MB, 8589934592 bytes255 heads, 63 sectors/track, 1044 cylindersUnits = cylinders of 16065 * 512 = 82252

USF MSDS501 计算数据科学中文讲义 2.4 Python 中的编程模式_cheqieshi4150的博客-程序员宅基地

来源:ApacheCN『USF MSDS501 计算数据科学中文讲义』翻译项目原文:Programming Patterns in Python译者:飞龙协议:CC BY-NC-SA 4.0现在我们已经了解了计算机如何组织数据,并进行一些低级编程操作,现在让我们看一些常见的高级编程...

JetsonNX修改matplotlibrc中backend的多种方法_吾系桉宁的博客-程序员宅基地

文章目录1.命令行输入:`quit()`2.在python程序中使用代码修改3.在命令行的python中参考博客1.命令行输入:quit()出现matplotlibrc路径:/etc/matplotlibrc2.在python程序中使用代码修改import matplotlibmatplotlib.use('Agg') # Agg即为修改的backend3.在命令行的python中import matplotlibmatplotlib.matplotlib_fname()这时会打

随便推点

网络类型拓扑搭建_红二岁的博客-程序员宅基地_网络拓扑搭建

一、实验要求二、实验过程拓扑搭建配置路由,以及DHCP自动获取IP地址成功获取IP地址R1与R5的PAP认证R5主认证方R1R1/2/3基于MGRE环境NAT映射端口于ripR1/4基于GRE环境基于RIP全网可达

elasticsearch max virtual memory areas vm.max_map_count [65530] is too low, increase to at le_CodingSir的博客-程序员宅基地

具体错误信息如下:[email protected]buntu:~/software/elasticsearch$ ./bin/elasticsearch[2017-03-23T18:14:05,880][INFO ][o.e.n.Node ] [] initializing ...[2017-03-23T18:14:06,151][INFO ][o.e.e.NodeE...

mac上录制视频并转成gif格式_赵诗诗ScarlettZhao的博客-程序员宅基地

一、下载工具 以下两个工具是免费的,但是可能转化之后清晰度不够。 1、打开App Store,搜索apowersoft,下载 2、在App Store上下载Total Video Converter life二、工具界面 apowersoft对应的界面:Total Video Converter life对应的界面: 三、实际操作step 1:录制: 点击apowersoft录制,可以选择

ExternalSorter 外部排序器在Spark Shuffle过程中的设计思路剖析-Spark商业环境实战_weixin_34221276的博客-程序员宅基地

本套系列博客从真实商业环境抽取案例进行总结和分享,并给出Spark源码解读及商业实战指导,请持续关注本套博客。版权声明:本套Spark源码解读及商业实战归作者(秦凯新)所有,禁止转载,欢迎学习。Spark商业环境实战及调优进阶系列Spark商业环境实战-Spark内置框架rpc通讯机制及RpcEnv基础设施 Spark商业环境实战-Spark事件监听总线流程分析Spark商业环境实战-S...

【Unity Shaders】学习笔记——SurfaceShader(十一)光照模型_diaoji4196的博客-程序员宅基地

【Unity Shaders】学习笔记——SurfaceShader(十一)光照模型转载请注明出处:http://www.cnblogs.com/-867259206/p/5664792.html如果你想从零开始学习Unity Shader,那么你可以看看本系列的文章入门,你只需要稍微有点编程的概念就可以。水平有限,难免有谬误之处,望指出。...

Matlab 二维图_凭栏听雨客的博客-程序员宅基地

简易线性函数图:ezplot(f)ezplot(f,[xmin,xmax])ezplot(f,[xmin,xmax,ymin,ymax])ezplot(f(x,y))ezplot(f(x,y),[tmin,tmax])f是符号函数表达式,默认的x和y的自变量均为[-2Π,2Π]但是可以自己改变。特殊地,当变量x和变量y军事参变量t的函数,也可在书写格式中添加[tmin,tmax]....