Markdown 源文件下载 / 链接未知本文固定链接 https://ericp.cn/cmd

Cmd Markdown 公式指导手册

新增内容：戴帽符号
修补内容：如何输入一个交换图表 / 在字符间加入空格 Ver. 2020-10-03

本文为 MathJax 在 Cmd Markdown 环境下的常用语法指引。Cmd Markdown 编辑阅读器支持 $mathjax_tutorial_mdeditor_201003 (2) - 图1$ 编辑显示支持，例如： $mathjax_tutorial_mdeditor_201003 (2) - 图2$ ，访问 MathJax 以参考更多使用方法。

右键点击每一个公式，选择 [Show Math As] → [TeX Commands] 以查看该公式的命令详情。

Cmd Markdown 公式指导手册
一、公式使用参考

一、公式使用参考

1．如何插入公式

$mathjax_tutorial_mdeditor_201003 (2) - 图3$ 的数学公式有两种：行中公式和独立公式。行中公式放在文中与其它文字混编，独立公式单独成行。

行中公式可以用如下方法表示：

: $ 数学公式 $

独立公式可以用如下方法表示：

: 数学公式

自动编号的公式可以用如下方法表示：
: 若需要手动编号，参见“大括号和行标的使用”。

: \begin{equation}
数学公式
\label{eq:当前公式名}
\end{equation}

自动编号后的公式可在全文任意处使用 \eqref{eq:公式名} 语句引用。

例子：

$ J_\alpha(x) = \sum_{m=0}^\infty \frac{(-1)^m}{m! \Gamma (m + \alpha + 1)} {\left({ \frac{x}{2} }\right)}^{2m + \alpha} \text {，行内公式示例} $

显示：$ J\alpha(x) = \sum{m=0}^\infty \frac{(-1)^m}{m! \Gamma (m + \alpha + 1)} {\left({ \frac{x}{2} }\right)}^{2m + \alpha} \text {，行内公式示例} $
例子：

$$ J_\alpha(x) = \sum_{m=0}^\infty \frac{(-1)^m}{m! \Gamma (m + \alpha + 1)} {\left({ \frac{x}{2} }\right)}^{2m + \alpha} \text {，独立公式示例} $$

显示： J\alpha(x) = \sum{m=0}^\infty \frac{(-1)^m}{m! \Gamma (m + \alpha + 1)} {\left({ \frac{x}{2} }\right)}^{2m + \alpha} \text {，独立公式示例}
例子：

$$ 在公式 \eqref{eq:sample} 中，我们看到了这个被自动编号的公式。$$
\begin{equation}
    E=mc^2 \text{，自动编号公式示例}
    \label{eq:sample}
\end{equation}

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图4$

\begin{equation}
E=mc^2 \text{，自动编号公式示例}
\label{eq:sample}
\end{equation}

2．如何输入上下标

^ 表示上标, _ 表示下标。如果上下标的内容多于一个字符，需要用 {} 将这些内容括成一个整体。上下标可以嵌套，也可以同时使用。

例子：

$$ x^{y^z}=(1+{\rm e}^x)^{-2xy^w} $$

显示：$$ xz}=(1+{\rm e}{-2xy^w} $$

另外，如果要在左右两边都有上下标，可以使用 \sideset 命令；也可以简单地在符号前面多打一个上下标，此时会以行内公式渲染。

例子：

$$ \sideset{^1_2}{^3_4}\bigotimes \quad or \quad {^1_2}\bigotimes {^3_4} $$

显示：$$\sideset{3_4}\bigotimes \quad or \quad {^1_2}\bigotimes {^3_4} $$

3．如何输入括号和分隔符

()、[] 和 | 表示符号本身，使用 \{\} 来表示 {} 。当要显示大号的括号或分隔符时，要用 \left 和 \right 命令。

一些特殊的括号：

输入	显示	输入	显示
\langle	$mathjax_tutorial_mdeditor_201003 (2) - 图5$	\rangle	$mathjax_tutorial_mdeditor_201003 (2) - 图6$
\lceil	$mathjax_tutorial_mdeditor_201003 (2) - 图7$	\rceil	$mathjax_tutorial_mdeditor_201003 (2) - 图8$
\lfloor	$mathjax_tutorial_mdeditor_201003 (2) - 图9$	\rfloor	$mathjax_tutorial_mdeditor_201003 (2) - 图10$
\lbrace	$mathjax_tutorial_mdeditor_201003 (2) - 图11$	\rbrace	$mathjax_tutorial_mdeditor_201003 (2) - 图12$
\lvert	$mathjax_tutorial_mdeditor_201003 (2) - 图13$	\rvert	$mathjax_tutorial_mdeditor_201003 (2) - 图14$
\lVert	$mathjax_tutorial_mdeditor_201003 (2) - 图15$	\rVert	$mathjax_tutorial_mdeditor_201003 (2) - 图16$

@lymd 有时，我们需要在行内使用两个竖杠表示向量间的某种空间距离，可以这样写
\lVert \boldsymbol{X}_i - \boldsymbol{S}_j \rVert^2 → $mathjax_tutorial_mdeditor_201003 (2) - 图17$

例子：

$$ f(x,y,z) = 3y^2z \left( 3+\frac{7x+5}{1+y^2} \right) $$

显示：$$ f(x,y,z) = 3y^2z \left( 3+\frac{7x+5}{1+y^2} \right) $$

有时要用 \left. 或 \right. 进行匹配而不显示本身。

例子：

$$ \left. \frac{{\rm d}u}{{\rm d}x} \right| _{x=0} $$

显示：$$ \left. \frac{{\rm d}u}{{\rm d}x} \right| _{x=0} $$

4．如何输入分数

通常使用 \frac {分子} {分母} 来生成一个分数，分数可多层嵌套。如果分式较为复杂，亦可使用 分子 \over 分母 此时分数仅有一层。

例子：

$$ \frac{a-1}{b-1} \quad or \quad {a+1 \over b+1} $$

显示：$$ \frac{a-1}{b-1} \quad or \quad {a+1 \over b+1} $$

当分式 仅有两个字符时 可直接输入 \frac ab 来快速生成一个 $mathjax_tutorial_mdeditor_201003 (2) - 图18$ 。

例子：

$$ \frac 12,\frac 1a,\frac a2 \quad \mid \quad \text{2 letters only:} \quad \frac 12a \,, k\frac q{r^2} $$

显示：$$ \frac 12,\frac 1a,\frac a2 \quad \mid \quad \text{2 letters only:} \quad \frac 12a ,, k\frac q{r^2} $$

5．如何输入开方

使用 \sqrt [根指数，省略时为2] {被开方数} 命令输入开方。

例子：

$$ \sqrt{2} \quad or \quad \sqrt[n]{3} $$

显示：$$ \sqrt{2} \quad or \quad \sqrt[n]{3} $$

6．如何输入省略号

数学公式中常见的省略号有两种，\ldots 表示与 文本底线 对齐的省略号，\cdots 表示与 文本中线 对齐的省略号。

例子：

$$ f(x_1,x_2,\underbrace{\ldots}_{\rm ldots} ,x_n) = x_1^2 + x_2^2 + \underbrace{\cdots}_{\rm cdots} + x_n^2 $$

显示：$$ f(x1,x_2,\underbrace{\ldots}{\rm ldots} ,xn) = x_1^2 + x_2^2 + \underbrace{\cdots}{\rm cdots} + x_n^2 $$

7．如何输入向量

使用 \vec{向量} 来自动产生一个向量。也可以使用 \overrightarrow 等命令自定义字母上方的符号。

例子：

$$ \vec{a} \cdot \vec{b}=0 $$

显示： \vec{a} \cdot \vec{b}=0
例子：

$$ xy \text{ with arrows:} \quad \overleftarrow{xy} \; \mid \; \overleftrightarrow{xy} \; \mid \; \overrightarrow{xy} $$

显示：$$ xy \text{ with arrows:} \quad \overleftarrow{xy} ; \mid ; \overleftrightarrow{xy} ; \mid ; \overrightarrow{xy} $$

8．如何输入积分

使用 \int_积分下限^积分上限 {被积表达式} 来输入一个积分。

例子：

$$ \int_0^1 {x^2} \,{\rm d}x $$

显示： \int_0^1 {x^2} ,{\rm d}x

本例中 \, 和 {\rm d} 部分可省略，但加入能使式子更美观，详见“在字符间加入空格”及“如何进行字体转换”。

9．如何输入极限运算

使用 \lim_{变量 \to 表达式} 表达式 来输入一个极限。如有需求，可以更改 \to 符号至任意符号。

例子：

$$ \lim_{n \to \infty} \frac{1}{n(n+1)} \quad and \quad \lim_{x\leftarrow{示例}} \frac{1}{n(n+1)} $$

显示： \lim{n \to \infty} \frac{1}{n(n+1)} \quad and \quad \lim{x\leftarrow{示例}} \frac{1}{n(n+1)}

10．如何输入累加、累乘运算

使用 \sum_{下标表达式}^{上标表达式} {累加表达式} 来输入一个累加。与之类似，使用 \prod \bigcup \bigcap 来分别输入累乘、并集和交集，更多符号可参考“其它特殊字符”。
此类符号在行内显示时上下标表达式将会移至右上角和右下角，如 $mathjax_tutorial_mdeditor_201003 (2) - 图19$ 。

例子：

$$ \sum_{i=1}^n \frac{1}{i^2} \quad and \quad \prod_{i=1}^n \frac{1}{i^2} \quad and \quad \bigcup_{i=1}^{2} \Bbb{R} $$

显示：$$ \sum{i=1}^n \frac{1}{i^2} \quad and \quad \prod{i=1}^n \frac{1}{i^2} \quad and \quad \bigcup_{i=1}^{2} \Bbb{R} $$

11．如何输入希腊字母

输入 \小写希腊字母英文全称 和 \首字母大写希腊字母英文全称 来分别输入小写和大写希腊字母。
对于大写希腊字母与现有字母相同的，直接输入大写字母即可。

输入	显示	输入	显示	输入	显示	输入	显示
\alpha	$mathjax_tutorial_mdeditor_201003 (2) - 图20$	A	$mathjax_tutorial_mdeditor_201003 (2) - 图21$	\beta	$mathjax_tutorial_mdeditor_201003 (2) - 图22$	B	$mathjax_tutorial_mdeditor_201003 (2) - 图23$
\gamma	$mathjax_tutorial_mdeditor_201003 (2) - 图24$	\Gamma	$mathjax_tutorial_mdeditor_201003 (2) - 图25$	\delta	$mathjax_tutorial_mdeditor_201003 (2) - 图26$	\Delta	$mathjax_tutorial_mdeditor_201003 (2) - 图27$
\epsilon	$mathjax_tutorial_mdeditor_201003 (2) - 图28$	E	$mathjax_tutorial_mdeditor_201003 (2) - 图29$	\zeta	$mathjax_tutorial_mdeditor_201003 (2) - 图30$	Z	$mathjax_tutorial_mdeditor_201003 (2) - 图31$
\eta	$mathjax_tutorial_mdeditor_201003 (2) - 图32$	H	$mathjax_tutorial_mdeditor_201003 (2) - 图33$	\theta	$mathjax_tutorial_mdeditor_201003 (2) - 图34$	\Theta	$mathjax_tutorial_mdeditor_201003 (2) - 图35$
\iota	$mathjax_tutorial_mdeditor_201003 (2) - 图36$	I	$mathjax_tutorial_mdeditor_201003 (2) - 图37$	\kappa	$mathjax_tutorial_mdeditor_201003 (2) - 图38$	K	$mathjax_tutorial_mdeditor_201003 (2) - 图39$
\lambda	$mathjax_tutorial_mdeditor_201003 (2) - 图40$	\Lambda	$mathjax_tutorial_mdeditor_201003 (2) - 图41$	\mu	$mathjax_tutorial_mdeditor_201003 (2) - 图42$	M	$mathjax_tutorial_mdeditor_201003 (2) - 图43$
\nu	$mathjax_tutorial_mdeditor_201003 (2) - 图44$	N	$mathjax_tutorial_mdeditor_201003 (2) - 图45$	\xi	$mathjax_tutorial_mdeditor_201003 (2) - 图46$	\Xi	$mathjax_tutorial_mdeditor_201003 (2) - 图47$
o	$mathjax_tutorial_mdeditor_201003 (2) - 图48$	O	$mathjax_tutorial_mdeditor_201003 (2) - 图49$	\pi	$mathjax_tutorial_mdeditor_201003 (2) - 图50$	\Pi	$mathjax_tutorial_mdeditor_201003 (2) - 图51$
\rho	$mathjax_tutorial_mdeditor_201003 (2) - 图52$	P	$mathjax_tutorial_mdeditor_201003 (2) - 图53$	\sigma	$mathjax_tutorial_mdeditor_201003 (2) - 图54$	\Sigma	$mathjax_tutorial_mdeditor_201003 (2) - 图55$
\tau	$mathjax_tutorial_mdeditor_201003 (2) - 图56$	T	$mathjax_tutorial_mdeditor_201003 (2) - 图57$	\upsilon	$mathjax_tutorial_mdeditor_201003 (2) - 图58$	\Upsilon	$mathjax_tutorial_mdeditor_201003 (2) - 图59$
\phi	$mathjax_tutorial_mdeditor_201003 (2) - 图60$	\Phi	$mathjax_tutorial_mdeditor_201003 (2) - 图61$	\chi	$mathjax_tutorial_mdeditor_201003 (2) - 图62$	X	$mathjax_tutorial_mdeditor_201003 (2) - 图63$
\psi	$mathjax_tutorial_mdeditor_201003 (2) - 图64$	\Psi	$mathjax_tutorial_mdeditor_201003 (2) - 图65$	\omega	$mathjax_tutorial_mdeditor_201003 (2) - 图66$	\Omega	$mathjax_tutorial_mdeditor_201003 (2) - 图67$

部分字母有变量专用形式，以 \var- 开头。

小写形式	大写形式	变量形式	显示
\epsilon	E	\varepsilon	$mathjax_tutorial_mdeditor_201003 (2) - 图68$
\theta	\Theta	\vartheta	$mathjax_tutorial_mdeditor_201003 (2) - 图69$
\rho	P	\varrho	$mathjax_tutorial_mdeditor_201003 (2) - 图70$
\sigma	\Sigma	\varsigma	$mathjax_tutorial_mdeditor_201003 (2) - 图71$
\phi	\Phi	\varphi	$mathjax_tutorial_mdeditor_201003 (2) - 图72$

12．如何输入其它特殊字符

完整的 $mathjax_tutorial_mdeditor_201003 (2) - 图73$ 可用符号列表可以在这份文档中查阅（极长，共 348 页），大部分常用符号可以参阅这份精简版文档查询。需要注意的是， $mathjax_tutorial_mdeditor_201003 (2) - 图74$ 符号并不保证在 MathJax v2.2 中可用，即在 Cmd Markdown 编辑阅读器中可能并不支持所输入的特定命令。

若需要显示更大或更小的字符，在符号前插入 \large 或 \small 命令。
MathJax 针对任意元素均提供从小至大 \tiny \Tiny \scriptsize \small *默认值 \normalsize \large \Large \LARGE \huge \Huge 共十种渲染大小，详见官方文档。

若找不到需要的符号，推荐使用 $mathjax_tutorial_mdeditor_201003 (2) - 图75$ 来画出想要的符号

(1)．关系运算符

输入	显示	输入	显示	输入	显示	输入	显示
\pm	$mathjax_tutorial_mdeditor_201003 (2) - 图77$	\times	$mathjax_tutorial_mdeditor_201003 (2) - 图78$	\div	$mathjax_tutorial_mdeditor_201003 (2) - 图79$	\mid	$mathjax_tutorial_mdeditor_201003 (2) - 图80$
\nmid	$mathjax_tutorial_mdeditor_201003 (2) - 图81$	\cdot	$mathjax_tutorial_mdeditor_201003 (2) - 图82$	\circ	$mathjax_tutorial_mdeditor_201003 (2) - 图83$	\ast	$mathjax_tutorial_mdeditor_201003 (2) - 图84$
\bigodot	$mathjax_tutorial_mdeditor_201003 (2) - 图85$	\bigotimes	$mathjax_tutorial_mdeditor_201003 (2) - 图86$	\bigoplus	$mathjax_tutorial_mdeditor_201003 (2) - 图87$	\leq	$mathjax_tutorial_mdeditor_201003 (2) - 图88$
\geq	$mathjax_tutorial_mdeditor_201003 (2) - 图89$	\neq	$mathjax_tutorial_mdeditor_201003 (2) - 图90$	\approx	$mathjax_tutorial_mdeditor_201003 (2) - 图91$	\equiv	$mathjax_tutorial_mdeditor_201003 (2) - 图92$
\sum	$mathjax_tutorial_mdeditor_201003 (2) - 图93$	\prod	$mathjax_tutorial_mdeditor_201003 (2) - 图94$	\coprod	$mathjax_tutorial_mdeditor_201003 (2) - 图95$	\backslash	$mathjax_tutorial_mdeditor_201003 (2) - 图96$

(2)．集合运算符

输入	显示	输入	显示	输入	显示
\emptyset	$mathjax_tutorial_mdeditor_201003 (2) - 图97$	\in	$mathjax_tutorial_mdeditor_201003 (2) - 图98$	\notin	$mathjax_tutorial_mdeditor_201003 (2) - 图99$
\subset	$mathjax_tutorial_mdeditor_201003 (2) - 图100$	\supset	$mathjax_tutorial_mdeditor_201003 (2) - 图101$	\subseteq	$mathjax_tutorial_mdeditor_201003 (2) - 图102$
\supseteq	$mathjax_tutorial_mdeditor_201003 (2) - 图103$	\cap	$mathjax_tutorial_mdeditor_201003 (2) - 图104$	\cup	$mathjax_tutorial_mdeditor_201003 (2) - 图105$
\vee	$mathjax_tutorial_mdeditor_201003 (2) - 图106$	\wedge	$mathjax_tutorial_mdeditor_201003 (2) - 图107$	\uplus	$mathjax_tutorial_mdeditor_201003 (2) - 图108$
\top	$mathjax_tutorial_mdeditor_201003 (2) - 图109$	\bot	$mathjax_tutorial_mdeditor_201003 (2) - 图110$	\complement	$mathjax_tutorial_mdeditor_201003 (2) - 图111$

(3)．对数运算符

输入	显示	输入	显示	输入	显示
\log	$mathjax_tutorial_mdeditor_201003 (2) - 图112$	\lg	$mathjax_tutorial_mdeditor_201003 (2) - 图113$	\ln	$mathjax_tutorial_mdeditor_201003 (2) - 图114$

(4)．三角运算符

输入	显示	输入	显示	输入	显示
\backsim	$mathjax_tutorial_mdeditor_201003 (2) - 图115$	\cong	$mathjax_tutorial_mdeditor_201003 (2) - 图116$	\angle A	$mathjax_tutorial_mdeditor_201003 (2) - 图117$
\sin	$mathjax_tutorial_mdeditor_201003 (2) - 图118$	\cos	$mathjax_tutorial_mdeditor_201003 (2) - 图119$	\tan	$mathjax_tutorial_mdeditor_201003 (2) - 图120$
\csc	$mathjax_tutorial_mdeditor_201003 (2) - 图121$	\sec	$mathjax_tutorial_mdeditor_201003 (2) - 图122$	\cot	$mathjax_tutorial_mdeditor_201003 (2) - 图123$

(5)．微积分运算符

输入	显示	输入	显示	输入	显示
\int	$mathjax_tutorial_mdeditor_201003 (2) - 图124$	\iint	$mathjax_tutorial_mdeditor_201003 (2) - 图125$	\iiint	$mathjax_tutorial_mdeditor_201003 (2) - 图126$
\partial	$mathjax_tutorial_mdeditor_201003 (2) - 图127$	\oint	$mathjax_tutorial_mdeditor_201003 (2) - 图128$	\prime	$mathjax_tutorial_mdeditor_201003 (2) - 图129$
\lim	$mathjax_tutorial_mdeditor_201003 (2) - 图130$	\infty	$mathjax_tutorial_mdeditor_201003 (2) - 图131$	\nabla	$mathjax_tutorial_mdeditor_201003 (2) - 图132$

(6)．逻辑运算符

输入	显示	输入	显示	输入	显示
\because	$mathjax_tutorial_mdeditor_201003 (2) - 图133$	\therefore	$mathjax_tutorial_mdeditor_201003 (2) - 图134$	\neg	$mathjax_tutorial_mdeditor_201003 (2) - 图135$
\forall	$mathjax_tutorial_mdeditor_201003 (2) - 图136$	\exists	$mathjax_tutorial_mdeditor_201003 (2) - 图137$	\not\subset	$mathjax_tutorial_mdeditor_201003 (2) - 图138$
\not<	$mathjax_tutorial_mdeditor_201003 (2) - 图139$	\not>	$mathjax_tutorial_mdeditor_201003 (2) - 图140$	\not=	$mathjax_tutorial_mdeditor_201003 (2) - 图141$

(7)．戴帽符号

输入	显示	输入	显示	输入	显示
\hat{xy}	$mathjax_tutorial_mdeditor_201003 (2) - 图142$	\widehat{xyz}	$mathjax_tutorial_mdeditor_201003 (2) - 图143$	\bar{y}	$mathjax_tutorial_mdeditor_201003 (2) - 图144$
\tilde{xy}	$mathjax_tutorial_mdeditor_201003 (2) - 图145$	\widetilde{xyz}	$mathjax_tutorial_mdeditor_201003 (2) - 图146$	\acute{y}	$mathjax_tutorial_mdeditor_201003 (2) - 图147$
\breve{y}	$mathjax_tutorial_mdeditor_201003 (2) - 图148$	\check{y}	$mathjax_tutorial_mdeditor_201003 (2) - 图149$	\grave{y}	$mathjax_tutorial_mdeditor_201003 (2) - 图150$
\dot{x}	$mathjax_tutorial_mdeditor_201003 (2) - 图151$	\ddot{x}	$mathjax_tutorial_mdeditor_201003 (2) - 图152$	\dddot{x}	$mathjax_tutorial_mdeditor_201003 (2) - 图153$

若需要在特定文字顶部\底部放置内容，可使用 \overset{顶部内容}{正常内容} 和 \underset{底部内容}{正常内容} 命令。

例子：

$$ \verb+\overset{above}{level}+ \qquad \overset{xx}{ABC} \;\; \mid \quad \overset{x^2}{\longmapsto}\ \, \mid \quad \overset{\bullet\circ\circ\bullet}{T} $$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图154$

例子：

$$ \verb+\underset{below}{level}+ \qquad \underset{xx}{ABC} \;\; \mid \quad \underset{x^2}{\longmapsto}\ \, \mid \quad \underset{\bullet\circ\circ\bullet}{T} $$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图155$

此命令可叠加嵌套使用，生成类似化学反应式的多重条件符号，
如 \overset{H_2}{\underset{1300℃}{\Longleftrightarrow}}：

$mathjax_tutorial_mdeditor_201003 (2) - 图156$ %7D%20%24%24%20%E5%92%8C%20%60%5Coverset%7BSurface%2Fbulk%7D%7B%5Cunderset%7Bdiffusion%7D%7B%5Clongleftrightarrow%7D%7D%60%EF%BC%9A%0A%24%24%20%5Crm%7B2OH%5E%7B%5Cbullet%7D%7BO(STN)%7D%2B2O%5E%7B%5Ctimes%7D%7BO(YSZ)%7D%20%5C%3B%20%5Coverset%7BSurface%2Fbulk%7D%7B%5Cunderset%7Bdiffusion%7D%7B%5Clongleftrightarrow%7D%7D%20%5C%3B%5C%3B%202OH%5E%7B%5Cbullet%7D%7BO(YSZ)%7D%2B2O%5E%7B%5Ctimes%7D%7BO(STN)%7D%7D%20#card=math&code=%20%5Crm%7BSrO%2BV%5E%7B%27%27%7D%7BSr%7D%20%5Coverset%7BH_2%7D%7B%5Cunderset%7B1300%E2%84%83%7D%7B%5CLongleftrightarrow%7D%7D%20Sr%5E%7B%5Ctimes%7D%7BSr%7D%2B2e%5E%7B%27%7D%2B%5Cfrac%2012O2%28g%29%7D%20%24%24%20%E5%92%8C%20%60%5Coverset%7BSurface%2Fbulk%7D%7B%5Cunderset%7Bdiffusion%7D%7B%5Clongleftrightarrow%7D%7D%60%EF%BC%9A%0A%24%24%20%5Crm%7B2OH%5E%7B%5Cbullet%7D%7BO%28STN%29%7D%2B2O%5E%7B%5Ctimes%7D%7BO%28YSZ%29%7D%20%5C%3B%20%5Coverset%7BSurface%2Fbulk%7D%7B%5Cunderset%7Bdiffusion%7D%7B%5Clongleftrightarrow%7D%7D%20%5C%3B%5C%3B%202OH%5E%7B%5Cbullet%7D%7BO%28YSZ%29%7D%2B2O%5E%7B%5Ctimes%7D_%7BO%28STN%29%7D%7D%20)

一般建议在书写化学方程式时声明 \require{AMDcd} 语句，使用 MathJax 内置的交换图表功能，具体例子可参见下文。

(8)．连线符号

其它可用的文字修饰符可参见官方文档 “Additional decorations”。

输入	显示
\fbox{a+b+c+d} 高级框选需声明 `enclose` 标签	$mathjax_tutorial_mdeditor_201003 (2) - 图157$
\overleftarrow{a+b+c+d}	$mathjax_tutorial_mdeditor_201003 (2) - 图158$
\overrightarrow{a+b+c+d}	$mathjax_tutorial_mdeditor_201003 (2) - 图159$
\overleftrightarrow{a+b+c+d}	$mathjax_tutorial_mdeditor_201003 (2) - 图160$
\underleftarrow{a+b+c+d}	$mathjax_tutorial_mdeditor_201003 (2) - 图161$
\underrightarrow{a+b+c+d}	$mathjax_tutorial_mdeditor_201003 (2) - 图162$
\underleftrightarrow{a+b+c+d}	$mathjax_tutorial_mdeditor_201003 (2) - 图163$
\overline{a+b+c+d}	$mathjax_tutorial_mdeditor_201003 (2) - 图164$
\underline{a+b+c+d}	$mathjax_tutorial_mdeditor_201003 (2) - 图165$
\overbrace{a+b+c+d}^{Sample}	$mathjax_tutorial_mdeditor_201003 (2) - 图166$
\underbrace{a+b+c+d}_{Sample}	$mathjax_tutorial_mdeditor_201003 (2) - 图167$
\overbrace{a+\underbrace{b+c}_{1.0}+d}^{2.0}	$mathjax_tutorial_mdeditor_201003 (2) - 图168$
\underbrace{a\cdot a\cdots a}_{b\text{ times}}	$mathjax_tutorial_mdeditor_201003 (2) - 图169$

(9)．箭头符号

推荐使用符号：
|输入|显示|输入|显示|输入|显示|
|:—:|:—:|:—:|:—:|:—:|:—:|
|\to| $mathjax_tutorial_mdeditor_201003 (2) - 图170$ |\mapsto| $mathjax_tutorial_mdeditor_201003 (2) - 图171$ |\underrightarrow{1℃/min} | $mathjax_tutorial_mdeditor_201003 (2) - 图172$ |
|\implies| $mathjax_tutorial_mdeditor_201003 (2) - 图173$ |\iff| $mathjax_tutorial_mdeditor_201003 (2) - 图174$ |\impliedby| $mathjax_tutorial_mdeditor_201003 (2) - 图175$ |
其它可用符号：
|输入|显示|输入|显示|
|:—:|:—:|:—:|:—:|
|\uparrow| $mathjax_tutorial_mdeditor_201003 (2) - 图176$ |\Uparrow| $mathjax_tutorial_mdeditor_201003 (2) - 图177$ |
|\downarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图178$ |\Downarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图179$ |
|\leftarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图180$ |\Leftarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图181$ |
|\rightarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图182$ |\Rightarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图183$ |
|\leftrightarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图184$ |\Leftrightarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图185$ |
|\longleftarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图186$ |\Longleftarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图187$ |
|\longrightarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图188$ |\Longrightarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图189$ |
|\longleftrightarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图190$ |\Longleftrightarrow| $mathjax_tutorial_mdeditor_201003 (2) - 图191$ |

13．如何进行字体转换

若要对公式的某一部分字符进行字体转换，可以用 {\字体 {需转换的部分字符}} 命令，其中 \字体 部分可以参照下表选择合适的字体。一般情况下，公式默认为斜体字 $mathjax_tutorial_mdeditor_201003 (2) - 图192$ 。

示例中 全部大写 的字体仅大写可用。

输入	全字母可用	显示	输入	仅大写可用	显示
\rm	罗马体	$mathjax_tutorial_mdeditor_201003 (2) - 图193$	\mathcal	花体（数学符号等）	$mathjax_tutorial_mdeditor_201003 (2) - 图194$
\it	斜体	$mathjax_tutorial_mdeditor_201003 (2) - 图195$	\mathbb	黑板粗体（定义域等）	$mathjax_tutorial_mdeditor_201003 (2) - 图196$
\bf	粗体	$mathjax_tutorial_mdeditor_201003 (2) - 图197$	\mit	数学斜体	$mathjax_tutorial_mdeditor_201003 (2) - 图198$
\sf	等线体	$mathjax_tutorial_mdeditor_201003 (2) - 图199$	\scr	手写体	$mathjax_tutorial_mdeditor_201003 (2) - 图200$
\tt	打字机体	$mathjax_tutorial_mdeditor_201003 (2) - 图201$
\frak	旧德式字体	$mathjax_tutorial_mdeditor_201003 (2) - 图202$

@lymd \boldsymbol{\alpha} 用来表示向量或者矩阵的加粗斜体，如向量 $mathjax_tutorial_mdeditor_201003 (2) - 图203$ 。

转换字体十分常用，例如在积分中：

例子：

\begin{array}{cc}
    \mathrm{Bad} & \mathrm{Better} \\
    \hline \\
    \int_0^1 x^2 dx & \int_0^1 x^2 \,{\rm d}x
\end{array}

显示：
\begin{array}{cc}
\mathrm{Bad} & \mathrm{Better} \
\hline \
\int_0^1 x^2 dx & \int_0^1 x^2 ,{\rm d}x
\end{array}

注意比较两个式子间 $mathjax_tutorial_mdeditor_201003 (2) - 图204$ 与 $mathjax_tutorial_mdeditor_201003 (2) - 图205$ 的不同。
使用 \operatorname 命令也可以达到相同的效果，详见“定义新的运算符”。

14．如何高亮一行公式

使用 \bbox[底色, (可选)边距, (可选)边框 border: 框宽度框类型框颜色] 命令来高亮一行公式。
底色和框颜色支持详见“更改文字颜色”，边距及框宽度支持 绝对像素 px 或 相对大小 em，框类型支持 实线 solid 或 虚线 dashed。

例子：

$$
\bbox[yellow]{
    e^x=\lim_{n\to\infty} \left( 1+\frac{x}{n} \right)^n \qquad (1)
}
$$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图206$ %5En%20%5Cqquad%20(1)%0A%7D%0A#card=math&code=%5Cbbox%5Byellow%5D%7B%0A%20%20%20%20e%5Ex%3D%5Clim_%7Bn%5Cto%5Cinfty%7D%20%5Cleft%28%201%2B%5Cfrac%7Bx%7D%7Bn%7D%20%5Cright%29%5En%20%5Cqquad%20%281%29%0A%7D%0A)

例子：

$$
\bbox[#9ff, 5px]{ % 此处向外添加 5 像素的边距
    e^x=\lim_{n\to\infty} \left( 1+\frac{x}{n} \right)^n \qquad (1)
}
$$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图207$ %5En%20%5Cqquad%20(1)%0A%7D%0A#card=math&code=%5Cbbox%5B%239ff%2C%205px%5D%7B%0A%20%20%20%20e%5Ex%3D%5Clim_%7Bn%5Cto%5Cinfty%7D%20%5Cleft%28%201%2B%5Cfrac%7Bx%7D%7Bn%7D%20%5Cright%29%5En%20%5Cqquad%20%281%29%0A%7D%0A)

例子：

$$
% 此处使用 0.5 倍行高作为边距，附加 2 像素的实线边框（Ctrl+Alt+Y 可见）
\bbox[#2f3542, 0.5em, border:2px solid #f1f2f6]{
    \color{#f1f2f6}{e^x=\lim_{n\to\infty} \left( 1+\frac{x}{n} \right)^n \qquad (1)}
}
$$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图208$ %5En%20%5Cqquad%20(1)%7D%0A%7D%0A#card=math&code=%5Cbbox%5B%232f3542%2C%200.5em%2C%20border%3A2px%20solid%20%23f1f2f6%5D%7B%0A%20%20%20%20%5Ccolor%7B%23f1f2f6%7D%7Be%5Ex%3D%5Clim_%7Bn%5Cto%5Cinfty%7D%20%5Cleft%28%201%2B%5Cfrac%7Bx%7D%7Bn%7D%20%5Cright%29%5En%20%5Cqquad%20%281%29%7D%0A%7D%0A)

15．大括号和行标的使用

在 \left 和 \right 之后加上要使用的括号来创建自动匹配高度的圆括号 ( )，方括号 [ ] 和花括号 \{ \}。
在每个公式末尾前使用 \tag {行标} 来实现行标。

例子：

$$
f\left(
   \left[ 
     \frac{
       1+\left\{x,y\right\}
     }{
       \left(
          \frac xy + \frac yx
       \right)
       (u+1)
     }+a
   \right]^{3/2}
\right)
\tag {行标}
$$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图209$ %0A%20%20%20%20%20%20%20(u%2B1)%0A%20%20%20%20%20%7D%2Ba%0A%20%20%20%5Cright%5D%5E%7B3%2F2%7D%0A%5Cright)%0A%5Ctag%20%7B%E8%A1%8C%E6%A0%87%7D%0A#card=math&code=f%5Cleft%28%0A%20%20%20%5Cleft%5B%20%0A%20%20%20%20%20%5Cfrac%7B%0A%20%20%20%20%20%20%201%2B%5Cleft%5C%7Bx%2Cy%5Cright%5C%7D%0A%20%20%20%20%20%7D%7B%0A%20%20%20%20%20%20%20%5Cleft%28%0A%20%20%20%20%20%20%20%20%20%20%5Cfrac%20xy%20%2B%20%5Cfrac%20yx%0A%20%20%20%20%20%20%20%5Cright%29%0A%20%20%20%20%20%20%20%28u%2B1%29%0A%20%20%20%20%20%7D%2Ba%0A%20%20%20%5Cright%5D%5E%7B3%2F2%7D%0A%5Cright%29%0A%5Ctag%20%7B%E8%A1%8C%E6%A0%87%7D%0A)

如果你需要在不同的行显示对应括号，可以在每一行对应处使用 \left. 或 \right. 来放一个“不存在的括号”。

例子：

$$
\begin{align*}
    a=&\left(1+2+3+ \cdots \right. \\
      &\cdots+\left. \infty-2+\infty-1+\infty\right)
\end{align*}
$$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图210$ %0A%5Cend%7Balign*%7D%0A#card=math&code=%5Cbegin%7Balign%2A%7D%0A%20%20%20%20a%3D%26%5Cleft%281%2B2%2B3%2B%20%5Ccdots%20%5Cright.%20%5C%5C%0A%20%20%20%20%20%20%26%5Ccdots%2B%5Cleft.%20%5Cinfty-2%2B%5Cinfty-1%2B%5Cinfty%5Cright%29%0A%5Cend%7Balign%2A%7D%0A)

如果你需要将大括号里面显示的分隔符也变大，可以使用 \middle 命令，此处分别使用单竖线 | 和双竖线 \\| 。

例子：

$$
\left\langle  
    q \; \middle|
        \frac{\frac xy}{\frac uv}
    \middle\| p 
\right\rangle
$$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图211$

16．其它命令

(1)．定义新的运算符 \operatorname

当需要使用的运算符不在 MathJax 的内置库中时，程序可能会报错或产生错误的渲染结果。此时可以使用 \operatorname 命令定义一个新的运算符号。

反例：

\begin{array}{c|c}
    \mathrm{Error} & \text{Wrong rendering} \\
    \hline \\
    \arsinh(x) & arsinh(x) \\
    \Res_{z=1} & Res_{z=1}{\frac{1}{z^2-z}=1} \\
\end{array}

显示：
\begin{array}{c|c}
\mathrm{Error} & \text{Wrong rendering} \
\hline \
\arsinh(x) & arsinh(x) \
\Res{z=1} & Res{z=1}{\frac{1}{z^2-z}=1} \
\end{array}

使用 \operatorname{运算符}{式子} 来生成一个普通运算，或使用 \operatorname*{运算符}_{下标}^{上标}{式子} 来生成一个含上下标的自定义运算。

例子：

\begin{array}{c|c}
    \text{Normal Operator} & \text{Operator with label above and below} \\
    \hline \\
    \scriptsize\text{\operatorname{arsinh}{x}} & \scriptsize\text{\operatorname*{Res}_{z=1}{\frac{1}{z^2-z}=1}} \\
    \operatorname{arsinh}{x} & \operatorname*{Res}_{z=1}{\frac{1}{z^2-z}=1} \\
\end{array}

显示：
\begin{array}{c|c}
\text{Normal Operator} & \text{Operator with label above and below} \
\scriptsize\text{\operatorname{arsinh}{x}} & \scriptsize\text{\operatorname{Res}_{z=1}{\frac{1}{z^2-z}=1}} [2ex]
\hline \
\operatorname{arsinh}{x} & \operatorname{Res}_{z=1}{\frac{1}{z^2-z}=1}
\end{array}

查询关于此命令的定义和关于此命令的讨论来进一步了解此命令。

(2)．添加注释文字 \text

在 \text {文字} 中仍可以使用 $公式$ 插入其它公式。

例子：

$$ f(n)= \begin{cases} n/2, & \text {if $n$ is even} \\ 3n+1, & \text{if $n$ is odd} \end{cases} $$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图212$ %3D%20%5Cbegin%7Bcases%7D%20n%2F2%2C%20%26%20%5Ctext%20%7Bif%20%24n%24%20is%20even%7D%20%5C%5C%203n%2B1%2C%20%26%20%5Ctext%7Bif%20%24n%24%20is%20odd%7D%20%5Cend%7Bcases%7D%20%0A#card=math&code=f%28n%29%3D%20%5Cbegin%7Bcases%7D%20n%2F2%2C%20%26%20%5Ctext%20%7Bif%20%24n%24%20is%20even%7D%20%5C%5C%203n%2B1%2C%20%26%20%5Ctext%7Bif%20%24n%24%20is%20odd%7D%20%5Cend%7Bcases%7D%20%0A)

(3)．在字符间加入空格

有四种宽度的空格可以使用： \,、\;、\quad 和 \qquad，灵活使用 \text{n个空格} 也可以在任意位置实现空格。
同时存在一种负空格 \! 用来减小字符间距，一般在物理单位中使用。
反复使用 \! 命令能够实现不同元素的叠加渲染，如 $mathjax_tutorial_mdeditor_201003 (2) - 图213$ 和 $ }!!!!!\div $

例子：

\begin{array}{c|c}
    \text{Spaces} & \text{Negative Space in Units} \\
    \hline \\
    \overbrace{a \! b}^{\text{\!}} \mid \underbrace{ab}_{\rm{default}} \mid \overbrace{a \, b}^{\text{\,}} \mid \underbrace{a \; b}_{\text{\;}} \mid \overbrace{a \quad b}^{\text{\quad}} \mid \underbrace{a \qquad b}_{\text{\qquad}} & \mathrm{N}\!\cdot\!\mathrm{m} \mid \mathrm{s}\!\cdot\!\mathrm{A} \mid \mathrm{kg}\!\cdot\!\mathrm{m}^2 \\ 
\end{array}

显示：
\begin{array}{c|c}
\text{Spaces} & \text{Negative Space in Units} \
\hline \
\overbrace{a ! b}^{\text{!}} \mid \underbrace{ab}{\rm{default}} \mid \overbrace{a , b}^{\text{,}} \mid \underbrace{a ; b}{\text{;}} \mid \overbrace{a \quad b}^{\text{\quad}} \mid \underbrace{a \qquad b}_{\text{\qquad}} & \mathrm{N}!\cdot!\mathrm{m} \mid \mathrm{s}!\cdot!\mathrm{A} \mid \mathrm{kg}!\cdot!\mathrm{m}^2 \
\end{array}

一些常见的公式单位可表达如下：

例子：

$$ \mu_0=4\pi\times10^{-7} \ \left.\mathrm{\mathrm{T}\!\cdot\!\mathrm{m}}\middle/\mathrm{A}\right. $$
$$ 180^\circ=\pi \ \mathrm{rad} $$
$$ \mathrm{N_A} = 6.022\times10^{23} \ \mathrm{mol}^{-1} $$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图214$

(4)．更改文字颜色 \color

使用 \color{颜色}{文字} 来更改特定的文字颜色。

更改文字颜色需要浏览器支持，如果浏览器不知道你所需的颜色，那么文字将被渲染为黑色。对于较旧的浏览器（HTML4 & CSS2），以下颜色是被支持的：

输入	显示	输入	显示
black	$mathjax_tutorial_mdeditor_201003 (2) - 图215$	grey	$mathjax_tutorial_mdeditor_201003 (2) - 图216$
silver	$mathjax_tutorial_mdeditor_201003 (2) - 图217$	white	$mathjax_tutorial_mdeditor_201003 (2) - 图218$
maroon	$mathjax_tutorial_mdeditor_201003 (2) - 图219$	red	$mathjax_tutorial_mdeditor_201003 (2) - 图220$
yellow	$mathjax_tutorial_mdeditor_201003 (2) - 图221$	lime	$mathjax_tutorial_mdeditor_201003 (2) - 图222$
olive	$mathjax_tutorial_mdeditor_201003 (2) - 图223$	green	$mathjax_tutorial_mdeditor_201003 (2) - 图224$
teal	$mathjax_tutorial_mdeditor_201003 (2) - 图225$	auqa	$mathjax_tutorial_mdeditor_201003 (2) - 图226$
blue	$mathjax_tutorial_mdeditor_201003 (2) - 图227$	navy	$mathjax_tutorial_mdeditor_201003 (2) - 图228$
purple	$mathjax_tutorial_mdeditor_201003 (2) - 图229$	fuchsia	$mathjax_tutorial_mdeditor_201003 (2) - 图230$

对于较新的浏览器（HTML5 & CSS3），HEX 颜色将被支持：

输入 \color {#rgb} {text} 来自定义更多的颜色，其中 #rgb 或 #rrggbb 的 r g b 可输入 0-9 和 a-f 来表示红色、绿色和蓝色的纯度（饱和度）。

例子：

\begin{array}{|rrrrrrrr|}\hline
    \verb+#000+ & \color{#000}{text} & & &
    \verb+#00F+ & \color{#00F}{text} & & \\
    & & \verb+#0F0+ & \color{#0F0}{text} &
    & & \verb+#0FF+ & \color{#0FF}{text} \\
    \verb+#F00+ & \color{#F00}{text} & & &
    \verb+#F0F+ & \color{#F0F}{text} & & \\
    & & \verb+#FF0+ & \color{#FF0}{text} &
    & & \verb+#FFF+ & \color{#FFF}{text} \\
\hline\end{array}

显示：
\begin{array}{|rrrrrrrr|}\hline
\verb+#000+ & \color{#000}{text} & & &
\verb+#00F+ & \color{#00F}{text} & & \
& & \verb+#0F0+ & \color{#0F0}{text} &
& & \verb+#0FF+ & \color{#0FF}{text} \
\verb+#F00+ & \color{#F00}{text} & & &
\verb+#F0F+ & \color{#F0F}{text} & & \
& & \verb+#FF0+ & \color{#FF0}{text} &
& & \verb+#FFF+ & \color{#FFF}{text} \
\hline\end{array}
例子：

\begin{array}{|rrrrrrrr|}\hline
    \verb+#000+ & \color{#000}{text} & \verb+#005+ & \color{#005}{text} & \verb+#00A+ & \color{#00A}{text} & \verb+#00F+ & \color{#00F}{text}  \\
    \verb+#500+ & \color{#500}{text} & \verb+#505+ & \color{#505}{text} & \verb+#50A+ & \color{#50A}{text} & \verb+#50F+ & \color{#50F}{text}  \\
    \verb+#A00+ & \color{#A00}{text} & \verb+#A05+ & \color{#A05}{text} & \verb+#A0A+ & \color{#A0A}{text} & \verb+#A0F+ & \color{#A0F}{text}  \\
    \verb+#F00+ & \color{#F00}{text} & \verb+#F05+ & \color{#F05}{text} & \verb+#F0A+ & \color{#F0A}{text} & \verb+#F0F+ & \color{#F0F}{text}  \\
\hline
    \verb+#080+ & \color{#080}{text} & \verb+#085+ & \color{#085}{text} & \verb+#08A+ & \color{#08A}{text} & \verb+#08F+ & \color{#08F}{text}  \\
    \verb+#580+ & \color{#580}{text} & \verb+#585+ & \color{#585}{text} & \verb+#58A+ & \color{#58A}{text} & \verb+#58F+ & \color{#58F}{text}  \\
    \verb+#A80+ & \color{#A80}{text} & \verb+#A85+ & \color{#A85}{text} & \verb+#A8A+ & \color{#A8A}{text} & \verb+#A8F+ & \color{#A8F}{text}  \\
    \verb+#F80+ & \color{#F80}{text} & \verb+#F85+ & \color{#F85}{text} & \verb+#F8A+ & \color{#F8A}{text} & \verb+#F8F+ & \color{#F8F}{text}  \\
\hline
    \verb+#0F0+ & \color{#0F0}{text} & \verb+#0F5+ & \color{#0F5}{text} & \verb+#0FA+ & \color{#0FA}{text} & \verb+#0FF+ & \color{#0FF}{text}  \\
    \verb+#5F0+ & \color{#5F0}{text} & \verb+#5F5+ & \color{#5F5}{text} & \verb+#5FA+ & \color{#5FA}{text} & \verb+#5FF+ & \color{#5FF}{text}  \\
    \verb+#AF0+ & \color{#AF0}{text} & \verb+#AF5+ & \color{#AF5}{text} & \verb+#AFA+ & \color{#AFA}{text} & \verb+#AFF+ & \color{#AFF}{text}  \\
    \verb+#FF0+ & \color{#FF0}{text} & \verb+#FF5+ & \color{#FF5}{text} & \verb+#FFA+ & \color{#FFA}{text} & \verb+#FFF+ & \color{#FFF}{text}  \\
\hline\end{array}

显示：
\begin{array}{|rrrrrrrr|}\hline
\verb+#000+ & \color{#000}{text} & \verb+#005+ & \color{#005}{text} & \verb+#00A+ & \color{#00A}{text} & \verb+#00F+ & \color{#00F}{text} \
\verb+#500+ & \color{#500}{text} & \verb+#505+ & \color{#505}{text} & \verb+#50A+ & \color{#50A}{text} & \verb+#50F+ & \color{#50F}{text} \
\verb+#A00+ & \color{#A00}{text} & \verb+#A05+ & \color{#A05}{text} & \verb+#A0A+ & \color{#A0A}{text} & \verb+#A0F+ & \color{#A0F}{text} \
\verb+#F00+ & \color{#F00}{text} & \verb+#F05+ & \color{#F05}{text} & \verb+#F0A+ & \color{#F0A}{text} & \verb+#F0F+ & \color{#F0F}{text} \
\hline
\verb+#080+ & \color{#080}{text} & \verb+#085+ & \color{#085}{text} & \verb+#08A+ & \color{#08A}{text} & \verb+#08F+ & \color{#08F}{text} \
\verb+#580+ & \color{#580}{text} & \verb+#585+ & \color{#585}{text} & \verb+#58A+ & \color{#58A}{text} & \verb+#58F+ & \color{#58F}{text} \
\verb+#A80+ & \color{#A80}{text} & \verb+#A85+ & \color{#A85}{text} & \verb+#A8A+ & \color{#A8A}{text} & \verb+#A8F+ & \color{#A8F}{text} \
\verb+#F80+ & \color{#F80}{text} & \verb+#F85+ & \color{#F85}{text} & \verb+#F8A+ & \color{#F8A}{text} & \verb+#F8F+ & \color{#F8F}{text} \
\hline
\verb+#0F0+ & \color{#0F0}{text} & \verb+#0F5+ & \color{#0F5}{text} & \verb+#0FA+ & \color{#0FA}{text} & \verb+#0FF+ & \color{#0FF}{text} \
\verb+#5F0+ & \color{#5F0}{text} & \verb+#5F5+ & \color{#5F5}{text} & \verb+#5FA+ & \color{#5FA}{text} & \verb+#5FF+ & \color{#5FF}{text} \
\verb+#AF0+ & \color{#AF0}{text} & \verb+#AF5+ & \color{#AF5}{text} & \verb+#AFA+ & \color{#AFA}{text} & \verb+#AFF+ & \color{#AFF}{text} \
\verb+#FF0+ & \color{#FF0}{text} & \verb+#FF5+ & \color{#FF5}{text} & \verb+#FFA+ & \color{#FFA}{text} & \verb+#FFF+ & \color{#FFF}{text} \
\hline\end{array}

(5)．添加删除线

使用删除线功能必须声明 $$ 符号。

在公式内使用 \require{cancel} 来允许片段删除线的显示。
声明片段删除线后，使用 \cancel{字符}、\bcancel{字符}、\xcancel{字符} 和 \cancelto{字符} 来实现各种片段删除线效果。

例子：

$$
\require{cancel}
\begin{array}{rl}
    \verb|y+\cancel{x}| & y+\cancel{x} \\
    \verb|\cancel{y+x}| & \cancel{y+x} \\
    \verb|y+\bcancel{x}| & y+\bcancel{x} \\
    \verb|y+\xcancel{x}| & y+\xcancel{x} \\
    \verb|y+\cancelto{0}{x}| & y+\cancelto{0}{x} \\
    \verb+\frac{1\cancel9}{\cancel95} = \frac15+& \frac{1\cancel9}{\cancel95} = \frac15 \\
\end{array}
$$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图231$

使用 \require{enclose} 来允许整段删除线的显示。
声明整段删除线后，使用 \enclose{删除线效果}{字符} 来实现各种整段删除线效果。
其中，删除线效果有 horizontalstrike、verticalstrike、updiagonalstrike 和 downdiagonalstrike，可叠加使用。

例子：

$$
\require{enclose}
\begin{array}{rl}
    \verb|\enclose{horizontalstrike}{x+y}| & \enclose{horizontalstrike}{x+y} \\
    \verb|\enclose{verticalstrike}{\frac xy}| & \enclose{verticalstrike}{\frac xy} \\
    \verb|\enclose{updiagonalstrike}{x+y}| & \enclose{updiagonalstrike}{x+y} \\
    \verb|\enclose{downdiagonalstrike}{x+y}| & \enclose{downdiagonalstrike}{x+y} \\
    \verb|\enclose{horizontalstrike,updiagonalstrike}{x+y}| & \enclose{horizontalstrike,updiagonalstrike}{x+y} \\
\end{array}
$$

显示：

$mathjax_tutorial_mdeditor_201003 (2) - 图232$

此外， \enclose 命令还可以产生包围的边框和圆等，参见 MathML Menclose Documentation 以查看更多效果。

例子： | 分别使用 circle 和 roundedbox 包围的公式 | | :—-: |

$$
\require{enclose}
\begin{array}{c}
    \enclose{circle}{f(\top),\, f^2(\top),\, f^3(\top) \,\cdots\, f^n(\top)} \\
    \enclose{roundedbox}{f(\bot),\, f^2(\bot),\, f^3(\bot) \,\cdots\, f^n(\bot)} \\
\end{array}
$$

使用 `box` 框住所有公式

$$
\require{enclose}
\enclose{box}{
    \begin{array}{c}
        f(\top),\, f^2(\top),\, f^3(\top) \,\cdots\, f^n(\top) \\
        f(\bot),\, f^2(\bot),\, f^3(\bot) \,\cdots\, f^n(\bot) \\
    \end{array}
}
$$

显示： | 分别使用 circle 和 roundedbox 包围的公式 | 使用 box 框住所有公式 | | :—-: | :—-: | | $$ | |

\require{enclose}
\begin{array}{c}
\enclose{circle}{f(\top),, f^2(\top),, f^3(\top) ,\cdots, f^n(\top)} \
\enclose{roundedbox}{f(\bot),, f^2(\bot),, f^3(\bot) ,\cdots, f^n(\bot)} \
\end{array}

$mathjax_tutorial_mdeditor_201003 (2) - 图233$

\require{enclose}
\enclose{box}{
\begin{array}{c}
f(\top),, f^2(\top),, f^3(\top) ,\cdots, f^n(\top) \
f(\bot),, f^2(\bot),, f^3(\bot) ,\cdots, f^n(\bot) \
\end{array}
}

$mathjax_tutorial_mdeditor_201003 (2) - 图234$ %E2%80%9D%E3%80%82%0A%0A%23%E4%BA%8C%E3%80%81%E7%9F%A9%E9%98%B5%E4%BD%BF%E7%94%A8%E5%8F%82%E8%80%83%0A%0A%23%231%EF%BC%8E%E5%A6%82%E4%BD%95%E8%BE%93%E5%85%A5%E6%97%A0%E6%A1%86%E7%9F%A9%E9%98%B5%0A%0A%E5%9C%A8%E5%BC%80%E5%A4%B4%E4%BD%BF%E7%94%A8%20%60%5Cbegin%7Bmatrix%7D%60%EF%BC%8C%E5%9C%A8%E7%BB%93%E5%B0%BE%E4%BD%BF%E7%94%A8%20%60%5Cend%7Bmatrix%7D%60%EF%BC%8C%E5%9C%A8%E4%B8%AD%E9%97%B4%E6%8F%92%E5%85%A5%E7%9F%A9%E9%98%B5%E5%85%83%E7%B4%A0%EF%BC%8C%E6%AF%8F%E4%B8%AA%E5%85%83%E7%B4%A0%E4%B9%8B%E9%97%B4%E6%8F%92%E5%85%A5%20%60%26%60%20%EF%BC%8C%E5%B9%B6%E5%9C%A8%E6%AF%8F%E8%A1%8C%E7%BB%93%E5%B0%BE%E5%A4%84%E4%BD%BF%E7%94%A8%20%60%5C%5C%60%20%E3%80%82%0A%E4%BD%BF%E7%94%A8%E7%9F%A9%E9%98%B5%E6%97%B6%E5%BF%85%E9%A1%BB%E5%A3%B0%E6%98%8E%20%60%24%60%20%E6%88%96%20%60%24%24%60%20%E7%AC%A6%E5%8F%B7%E3%80%82%0A%0A-%20%E4%BE%8B%E5%AD%90%EF%BC%9A%0A%60%60%60%0A#card=math&code=%7C%0A%0A%E6%AD%A4%E4%BE%8B%E8%AF%AD%E6%B3%95%E5%8F%AF%E5%8F%82%E8%A7%81%E2%80%9C%5B%E5%A6%82%E4%BD%95%E8%BE%93%E5%85%A5%E4%B8%80%E4%B8%AA%E6%95%B0%E7%BB%84%E6%88%96%E8%A1%A8%E6%A0%BC%5D%28%23%E4%BA%94%E6%95%B0%E7%BB%84%E4%B8%8E%E8%A1%A8%E6%A0%BC%E4%BD%BF%E7%94%A8%E5%8F%82%E8%80%83%29%E2%80%9D%E3%80%82%0A%0A%23%E4%BA%8C%E3%80%81%E7%9F%A9%E9%98%B5%E4%BD%BF%E7%94%A8%E5%8F%82%E8%80%83%0A%0A%23%231%EF%BC%8E%E5%A6%82%E4%BD%95%E8%BE%93%E5%85%A5%E6%97%A0%E6%A1%86%E7%9F%A9%E9%98%B5%0A%0A%E5%9C%A8%E5%BC%80%E5%A4%B4%E4%BD%BF%E7%94%A8%20%60%5Cbegin%7Bmatrix%7D%60%EF%BC%8C%E5%9C%A8%E7%BB%93%E5%B0%BE%E4%BD%BF%E7%94%A8%20%60%5Cend%7Bmatrix%7D%60%EF%BC%8C%E5%9C%A8%E4%B8%AD%E9%97%B4%E6%8F%92%E5%85%A5%E7%9F%A9%E9%98%B5%E5%85%83%E7%B4%A0%EF%BC%8C%E6%AF%8F%E4%B8%AA%E5%85%83%E7%B4%A0%E4%B9%8B%E9%97%B4%E6%8F%92%E5%85%A5%20%60%26%60%20%EF%BC%8C%E5%B9%B6%E5%9C%A8%E6%AF%8F%E8%A1%8C%E7%BB%93%E5%B0%BE%E5%A4%84%E4%BD%BF%E7%94%A8%20%60%5C%5C%60%20%E3%80%82%0A%E4%BD%BF%E7%94%A8%E7%9F%A9%E9%98%B5%E6%97%B6%E5%BF%85%E9%A1%BB%E5%A3%B0%E6%98%8E%20%60%24%60%20%E6%88%96%20%60%24%24%60%20%E7%AC%A6%E5%8F%B7%E3%80%82%0A%0A-%20%E4%BE%8B%E5%AD%90%EF%BC%9A%0A%60%60%60%0A)

\begin{matrix}
1 & x & x^2 \
1 & y & y^2 \
1 & z & z^2 \
\end{matrix}

$mathjax_tutorial_mdeditor_201003 (2) - 图235$

\begin{matrix}
1 & x & x^2 \
1 & y & y^2 \
1 & z & z^2 \
\end{matrix}

$mathjax_tutorial_mdeditor_201003 (2) - 图236$

\begin{pmatrix}
1 & a_1 & a_1^2 & \cdots & a_1^n \
1 & a_2 & a_2^2 & \cdots & a_2^n \
\vdots & \vdots & \vdots & \ddots & \vdots \
1 & a_m & a_m^2 & \cdots & a_m^n \
\end{pmatrix}

$mathjax_tutorial_mdeditor_201003 (2) - 图237$

\begin{pmatrix}
1 & a_1 & a_1^2 & \cdots & a_1^n \
1 & a_2 & a_2^2 & \cdots & a_2^n \
\vdots & \vdots & \vdots & \ddots & \vdots \
1 & a_m & a_m^2 & \cdots & a_m^n \
\end{pmatrix}

$mathjax_tutorial_mdeditor_201003 (2) - 图238$ %22%E3%80%82%0A%0A-%20%E4%BE%8B%E5%AD%90%EF%BC%9A%0A%60%60%60%0A#card=math&code=%0A%23%234%EF%BC%8E%E5%A6%82%E4%BD%95%E8%BE%93%E5%85%A5%E5%B8%A6%E5%88%86%E5%89%B2%E7%AC%A6%E5%8F%B7%E7%9A%84%E7%9F%A9%E9%98%B5%0A%0A%E8%AF%A6%E8%A7%81%22%5B%E6%95%B0%E7%BB%84%E4%BD%BF%E7%94%A8%E5%8F%82%E8%80%83%5D%28%23%E4%BA%94%E6%95%B0%E7%BB%84%E4%B8%8E%E8%A1%A8%E6%A0%BC%E4%BD%BF%E7%94%A8%E5%8F%82%E8%80%83%29%22%E3%80%82%0A%0A-%20%E4%BE%8B%E5%AD%90%EF%BC%9A%0A%60%60%60%0A)

\left[
\begin{array}{cc|c}
1 & 2 & 3 \
4 & 5 & 6 \
\end{array}
\right]

$mathjax_tutorial_mdeditor_201003 (2) - 图239$

\left[
\begin{array}{cc|c}
1 & 2 & 3 \
4 & 5 & 6 \
\end{array}
\right]

$mathjax_tutorial_mdeditor_201003 (2) - 图240$ 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f(n) =
    \begin{cases}
        n/2,  & \text{if $n$ is even} \\
        3n+1, & \text{if $n$ is odd} \\
    \end{cases}

$mathjax_tutorial_mdeditor_201003 (2) - 图241$

f(n) =
    \begin{cases}
        n/2,  & \text{if $n$ is even} \\
        3n+1, & \text{if $n$ is odd} \\
    \end{cases}

$mathjax_tutorial_mdeditor_201003 (2) - 图242$ %60%0A%0A%23%232%EF%BC%8E%E5%A6%82%E4%BD%95%E8%BE%93%E5%85%A5%E4%B8%80%E4%B8%AA%E5%B7%A6%E4%BE%A7%E5%AF%B9%E9%BD%90%E7%9A%84%E6%9D%A1%E4%BB%B6%E8%A1%A8%E8%BE%BE%E5%BC%8F%0A%0A%E8%8B%A5%E6%83%B3%E8%AE%A9%E6%96%87%E5%AD%97%E5%9C%A8%E5%B7%A6%E4%BE%A7%E5%AF%B9%E9%BD%90%E6%98%BE%E7%A4%BA%EF%BC%8C%E5%88%99%E6%9C%89%E5%A6%82%E4%B8%8B%E6%96%B9%E5%BC%8F%EF%BC%9A%0A%0A-%20%E4%BE%8B%E5%AD%90%EF%BC%9A%0A%60%60%60%0A#card=math&code=%0A%3E%20%2A%2A%40Sherlockk%2A%2A%20%E7%94%A8%20markdown%2Bmath%20%E7%BC%96%E8%BE%91%E6%97%B6%20%60%5Ctext%60%20%E5%86%85%E9%9C%80%E7%94%A8%20%60%5C%28equation%5C%29%60%0A%0A%23%232%EF%BC%8E%E5%A6%82%E4%BD%95%E8%BE%93%E5%85%A5%E4%B8%80%E4%B8%AA%E5%B7%A6%E4%BE%A7%E5%AF%B9%E9%BD%90%E7%9A%84%E6%9D%A1%E4%BB%B6%E8%A1%A8%E8%BE%BE%E5%BC%8F%0A%0A%E8%8B%A5%E6%83%B3%E8%AE%A9%E6%96%87%E5%AD%97%E5%9C%A8%2A%2A%E5%B7%A6%E4%BE%A7%E5%AF%B9%E9%BD%90%E6%98%BE%E7%A4%BA%2A%2A%EF%BC%8C%E5%88%99%E6%9C%89%E5%A6%82%E4%B8%8B%E6%96%B9%E5%BC%8F%EF%BC%9A%0A%0A-%20%E4%BE%8B%E5%AD%90%EF%BC%9A%0A%60%60%60%0A)

\left.
    \begin{array}{l}
        \text{if $n$ is even:} & n/2 \\
        \text{if $n$ is odd:} & 3n+1 \\
    \end{array}
\right\}
=f(n)

$mathjax_tutorial_mdeditor_201003 (2) - 图243$

\left.
    \begin{array}{l}
        \text{if $n$ is even:} & n/2 \\
        \text{if $n$ is odd:} & 3n+1 \\
    \end{array}
\right\}
=f(n)

$mathjax_tutorial_mdeditor_201003 (2) - 图244$

f(n) =
\begin{cases}
\frac{n}{2}, & \text{if $mathjax_tutorial_mdeditor_201003 (2) - 图245$ is even} \
3n+1, & \text{if $mathjax_tutorial_mdeditor_201003 (2) - 图246$ is odd} \
\end{cases}

$mathjax_tutorial_mdeditor_201003 (2) - 图247$

f(n) =
\begin{cases}
\frac{n}{2}, & \text{if $mathjax_tutorial_mdeditor_201003 (2) - 图248$ is even} [2ex]
3n+1, & \text{if $mathjax_tutorial_mdeditor_201003 (2) - 图249$ is odd} \
\end{cases}

$mathjax_tutorial_mdeditor_201003 (2) - 图250$

f(n) =
\begin{cases}
\frac{n}{2}, & \text{if $mathjax_tutorial_mdeditor_201003 (2) - 图251$ is even} \
3n+1, & \text{if $mathjax_tutorial_mdeditor_201003 (2) - 图252$ is odd} \
\end{cases}

$mathjax_tutorial_mdeditor_201003 (2) - 图253$

f(n) =
\begin{cases}
\frac{n}{2}, & \text{if $mathjax_tutorial_mdeditor_201003 (2) - 图254$ is even} [2ex]
3n+1, & \text{if $mathjax_tutorial_mdeditor_201003 (2) - 图255$ is odd} \
\end{cases}

$mathjax_tutorial_mdeditor_201003 (2) - 图256$

\begin{array}{c} % 总表格
\begin{array}{cc} % 第一行内分成两列
\begin{array}{c|cccc} % 第一列”最小值”数组
\text{min} & 0 & 1 & 2 & 3 \
\hline
0 & 0 & 0 & 0 & 0 \
1 & 0 & 1 & 1 & 1 \
2 & 0 & 1 & 2 & 2 \
3 & 0 & 1 & 2 & 3 \
\end{array}
&
\begin{array}{c|cccc} % 第二列”最大值”数组
\text{max} & 0 & 1 & 2 & 3 \
\hline
0 & 0 & 1 & 2 & 3 \
1 & 1 & 1 & 2 & 3 \
2 & 2 & 2 & 2 & 3 \
3 & 3 & 3 & 3 & 3 \
\end{array}
\end{array} % 第一行表格组结束
\
\begin{array}{c|cccc} % 第二行 Delta 值数组
\Delta & 0 & 1 & 2 & 3 \
\hline
0 & 0 & 1 & 2 & 3 \
1 & 1 & 0 & 1 & 2 \
2 & 2 & 1 & 0 & 1 \
3 & 3 & 2 & 1 & 0 \
\end{array} % 第二行表格结束
\end{array} % 总表格结束

$mathjax_tutorial_mdeditor_201003 (2) - 图257$

$mathjax_tutorial_mdeditor_201003 (2) - 图258$

\left{
\begin{array}{c}
a_1x+b_1y+c_1z=d_1 \
a_2x+b_2y+c_2z=d_2 \
a_3x+b_3y+c_3z=d_3 \
\end{array}
\right.

$mathjax_tutorial_mdeditor_201003 (2) - 图259$

\left{
\begin{array}{c}
a_1x+b_1y+c_1z=d_1 \
a_2x+b_2y+c_2z=d_2 \
a_3x+b_3y+c_3z=d_3 \
\end{array}
\right.

$mathjax_tutorial_mdeditor_201003 (2) - 图260$

x = a_0 + \cfrac{1^2}{a_1 +
\cfrac{2^2}{a_2 +
\cfrac{3^2}{a_3 +
\cfrac{4^4}{a_4 +
\cdots
}
}
}
}

$mathjax_tutorial_mdeditor_201003 (2) - 图261$

x = a_0 + \cfrac{1^2}{a_1 +
\cfrac{2^2}{a_2 +
\cfrac{3^2}{a_3 +
\cfrac{4^4}{a_4 +
\cdots
}
}
}
}

$mathjax_tutorial_mdeditor_201003 (2) - 图262$

x = a_0 + \frac{1^2}{a_1 +
\frac{2^2}{a_2 +
\frac{3^2}{a_3 +
\frac{4^4}{a_4 +
\cdots
}
}
}
}

$mathjax_tutorial_mdeditor_201003 (2) - 图263$

x = a_0 + \frac{1^2}{a_1 +
\frac{2^2}{a_2 +
\frac{3^2}{a_3 +
\frac{4^4}{a_4 +
\cdots
}
}
}
}

$mathjax_tutorial_mdeditor_201003 (2) - 图264$

x = a_0 + \frac{1^2}{a_1 +}
\frac{2^2}{a_2 +}
\frac{3^2}{a_3 +}
\frac{4^4}{a_4 +}
\cdots

$mathjax_tutorial_mdeditor_201003 (2) - 图265$

x = a_0 + \frac{1^2}{a_1 +}
\frac{2^2}{a_2 +}
\frac{3^2}{a_3 +}
\frac{4^4}{a_4 +}
\cdots

$mathjax_tutorial_mdeditor_201003 (2) - 图266$ %E3%80%82%0A%0A%E4%BD%BF%E7%94%A8%E4%B8%80%E8%A1%8C%20%60%5Crequire%7BAMScd%7D%60%20%E8%AF%AD%E5%8F%A5%E6%9D%A5%E5%85%81%E8%AE%B8%E4%BA%A4%E6%8D%A2%E5%9B%BE%E8%A1%A8%E7%9A%84%E6%98%BE%E7%A4%BA%E3%80%82%0A%E5%A3%B0%E6%98%8E%E4%BA%A4%E6%8D%A2%E5%9B%BE%E8%A1%A8%E5%90%8E%EF%BC%8C%E8%AF%AD%E6%B3%95%E4%B8%8E%E7%9F%A9%E9%98%B5%E7%9B%B8%E4%BC%BC%EF%BC%8C%E5%9C%A8%E5%BC%80%E5%A4%B4%E4%BD%BF%E7%94%A8%20%60%5Cbegin%7BCD%7D%60%EF%BC%8C%E5%9C%A8%E7%BB%93%E5%B0%BE%E4%BD%BF%E7%94%A8%20%60%5C%20end%7BCD%7D%60%EF%BC%8C%E5%9C%A8%E4%B8%AD%E9%97%B4%E6%8F%92%E5%85%A5%E5%9B%BE%E8%A1%A8%E5%85%83%E7%B4%A0%EF%BC%8C%E6%AF%8F%E4%B8%AA%E5%85%83%E7%B4%A0%E4%B9%8B%E9%97%B4%E6%8F%92%E5%85%A5%20%60%26%60%20%EF%BC%8C%E5%B9%B6%E5%9C%A8%E6%AF%8F%E8%A1%8C%E7%BB%93%E5%B0%BE%E5%A4%84%E4%BD%BF%E7%94%A8%20%60%5C%5C%60%E3%80%82%0A%0A-%20%E4%BE%8B%E5%AD%90%EF%BC%9A%0A%60%60%60%0A#card=math&code=%0A%E8%BF%9E%E5%88%86%E6%95%B0%E9%80%9A%E5%B8%B8%E9%83%BD%E5%A4%AA%E5%A4%A7%E4%BB%A5%E8%87%B3%E4%BA%8E%E4%B8%8D%E6%98%93%E6%8E%92%E7%89%88%EF%BC%8C%E6%89%80%E4%BB%A5%E5%BB%BA%E8%AE%AE%E5%9C%A8%E8%BF%9E%E5%88%86%E6%95%B0%E5%89%8D%E5%90%8E%E5%A3%B0%E6%98%8E%20%60%24%24%60%20%E7%AC%A6%E5%8F%B7%EF%BC%8C%E6%88%96%E4%BD%BF%E7%94%A8%E5%83%8F%20%60%5Ba0%2Ca1%2Ca2%2Ca3%2C%E2%80%A6%5D%60%20%E4%B8%80%E6%A0%B7%E7%9A%84%E7%B4%A7%E7%BC%A9%E8%AE%B0%E6%B3%95%E3%80%82%0A%0A%23%E4%B8%83%E3%80%81%E4%BA%A4%E6%8D%A2%E5%9B%BE%E8%A1%A8%E4%BD%BF%E7%94%A8%E5%8F%82%E8%80%83%0A%0A%23%231%EF%BC%8E%E5%A6%82%E4%BD%95%E8%BE%93%E5%85%A5%E4%B8%80%E4%B8%AA%E4%BA%A4%E6%8D%A2%E5%9B%BE%E8%A1%A8%0A%0A%3E%20%E6%8E%A8%E8%8D%90%E4%BD%BF%E7%94%A8%20Cmd%20Markdown%20%E8%87%AA%E5%B8%A6%E7%9A%84%E5%90%84%E7%A7%8D%E5%9B%BE%E5%8A%9F%E8%83%BD%EF%BC%8C%E8%AF%A6%E8%A7%81%20%5BCmd%20Markdown%20%E9%AB%98%E9%98%B6%E8%AF%AD%E6%B3%95%E6%89%8B%E5%86%8C%5D%28https%3A%2F%2Fwww.zybuluo.com%2Fmdeditor%3Furl%3Dhttps%3A%2F%2Fwww.zybuluo.com%2Fstatic%2Feditor%2Fmd-help.markdown%237-%25E6%25B5%2581%25E7%25A8%258B%25E5%259B%25BE%29%E3%80%82%0A%0A%E4%BD%BF%E7%94%A8%E4%B8%80%E8%A1%8C%20%60%5Crequire%7BAMScd%7D%60%20%E8%AF%AD%E5%8F%A5%E6%9D%A5%E5%85%81%E8%AE%B8%E4%BA%A4%E6%8D%A2%E5%9B%BE%E8%A1%A8%E7%9A%84%E6%98%BE%E7%A4%BA%E3%80%82%0A%E5%A3%B0%E6%98%8E%E4%BA%A4%E6%8D%A2%E5%9B%BE%E8%A1%A8%E5%90%8E%EF%BC%8C%E8%AF%AD%E6%B3%95%E4%B8%8E%E7%9F%A9%E9%98%B5%E7%9B%B8%E4%BC%BC%EF%BC%8C%E5%9C%A8%E5%BC%80%E5%A4%B4%E4%BD%BF%E7%94%A8%20%60%5Cbegin%7BCD%7D%60%EF%BC%8C%E5%9C%A8%E7%BB%93%E5%B0%BE%E4%BD%BF%E7%94%A8%20%60%5C%20end%7BCD%7D%60%EF%BC%8C%E5%9C%A8%E4%B8%AD%E9%97%B4%E6%8F%92%E5%85%A5%E5%9B%BE%E8%A1%A8%E5%85%83%E7%B4%A0%EF%BC%8C%E6%AF%8F%E4%B8%AA%E5%85%83%E7%B4%A0%E4%B9%8B%E9%97%B4%E6%8F%92%E5%85%A5%20%60%26%60%20%EF%BC%8C%E5%B9%B6%E5%9C%A8%E6%AF%8F%E8%A1%8C%E7%BB%93%E5%B0%BE%E5%A4%84%E4%BD%BF%E7%94%A8%20%60%5C%5C%60%E3%80%82%0A%0A-%20%E4%BE%8B%E5%AD%90%EF%BC%9A%0A%60%60%60%0A)

\require{AMScd}
\begin{CD}
A @>a>> B \
@V b V V# @VV c V \
C @>>d> D \
\end{CD}

$mathjax_tutorial_mdeditor_201003 (2) - 图267$

\require{AMScd}
\begin{CD}
A @>a>> B \
@V b V V# @VV c V \
C @>>d> D \
\end{CD}

$mathjax_tutorial_mdeditor_201003 (2) - 图268$

\require{AMDcd}
\begin{CD}
A @>>> B @>{\text{very long label}}>> C \
@. @AAA @| \
D @= E @<<< F \
\end{CD}

$mathjax_tutorial_mdeditor_201003 (2) - 图269$

\require{AMDcd}
\begin{CD}
A @>>> B @>{\text{very long label}}>> C \
@. @AAA @| \
D @= E @<<< F \
\end{CD}

$mathjax_tutorial_mdeditor_201003 (2) - 图270$

\require{AMDcd}
\begin{CD}
\rm{RCOHR^{‘}SO_3Na} @>{\large\text{Hydrolysis, $mathjax_tutorial_mdeditor_201003 (2) - 图271$ , Dil.HCl}}>> \rm{(RCOR^{‘})+NaCl+SO_2+ H_2O}
\end{CD}

$mathjax_tutorial_mdeditor_201003 (2) - 图272$

\require{AMDcd}
\begin{CD}
\rm{RCOHR^{‘}SO_3Na} @>{\large\text{Hydrolysis, $mathjax_tutorial_mdeditor_201003 (2) - 图273$ , Dil.HCl}}>> \rm{(RCOR^{‘})+NaCl+SO_2+ H_2O}
\end{CD}

$mathjax_tutorial_mdeditor_201003 (2) - 图274$ 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\require{AMSmath}
\begin{array}{cc}
\mathrm{Bad} & \mathrm{Better} \
\hline \
\int\intS f(x),dy,dx & \iint{\boldsymbol{S}} f(x),{\rm d}y,{\rm d}x \
\int\int\intV f(x),dz,dy,dx & \iiint{\boldsymbol{V}} f(x),{\rm d}z,{\rm d}y,{\rm d}x [3ex]
\hline \
\text{多重积分示例} & \idotsint_{\boldsymbol{D}} f(x_1,x_2,,\cdots, ,x_n),{\rm d}x_1\cdots{\rm d}x_n
\end{array}

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