# LaTeX公式手册(全网最全)

## 如何插入公式

$$\LaTeX$$ 的数学公式有两种：行中公式和独立公式（行间公式）。行中公式放在文中与其它文字混编，独立公式单独成行。

$数学公式$

$$数学公式$$

## 函数、符号及特殊字符

### 声调 / 变音符号

\dot{a}, \ddot{a}, \acute{a}, \grave{a}

$${\displaystyle {\dot {a}},{\ddot {a}},{\acute {a}},{\grave {a}}}$$

\check{a}, \breve{a}, \tilde{a}, \bar{a}

$${\displaystyle {\check {a}},{\breve {a}},{\tilde {a}},{\bar {a}}}$$

\hat{a}, \widehat{a}, \vec{a}

$${\displaystyle {\hat {a}},{\widehat {a}},{\vec {a}}}$$

### 标准函数

\exp_a b = a^b, \exp b = e^b, 10^m

$${\displaystyle \exp _{a}b=a^{b},\exp b=e^{b},10^{m}}$$

\ln c, \lg d = \log e, \log_{10} f

$${\displaystyle \ln c,\lg d=\log e,\log _{10}f}$$

\sin a, \cos b, \tan c, \cot d, \sec e, \csc f

$${\displaystyle \sin a,\cos b,\tan c,\cot d,\sec e,\csc f}$$

\arcsin a, \arccos b, \arctan c

$${\displaystyle \arcsin a,\arccos b,\arctan c}$$

\arccot d, \arcsec e, \arccsc f

$${\displaystyle \operatorname {arccot} d,\operatorname {arcsec} e,\operatorname {arccsc} f}$$

\sinh a, \cosh b, \tanh c, \coth d

$${\displaystyle \sinh a,\cosh b,\tanh c,\coth d}$$

\operatorname{sh}k, \operatorname{ch}l, \operatorname{th}m, \operatorname{coth}n

$${\displaystyle \operatorname {sh} k,\operatorname {ch} l,\operatorname {th} m,\operatorname {coth} n}$$

\operatorname{argsh}o, \operatorname{argch}p, \operatorname{argth}q

$${\displaystyle \operatorname {argsh} o,\operatorname {argch} p,\operatorname {argth} q}$$

\sgn r, \left\vert s \right\vert

$${\displaystyle \operatorname {sgn} r,\left\vert s\right\vert }$$

\min(x,y), \max(x,y)

$${\displaystyle \min(x,y),\max(x,y)}$$

### 界限，极限

\min x, \max y, \inf s, \sup t

$${\displaystyle \min x,\max y,\inf s,\sup t}$$

\lim u, \liminf v, \limsup w

$${\displaystyle \lim u,\liminf v,\limsup w}$$

\lim_{x \to \infty} \frac{1}{n(n+1)}

$${\displaystyle \lim_{x \to \infty} \frac{1}{n(n+1)}}$$

\dim p, \deg q, \det m, \ker\phi

$${\displaystyle \dim p,\deg q,\det m,\ker \phi}$$

### 投射

\Pr j, \hom l, \lVert z \rVert, \arg z

$${\displaystyle \Pr j,\hom l,\lVert z\rVert ,\arg z}$$

### 微分及导数

dt, \mathrm{d}t, \partial t, \nabla\psi

$${\displaystyle dt,\mathrm {d} t,\partial t,\nabla \psi }$$

dy/dx, \mathrm{d}y/\mathrm{d}x, \frac{dy}{dx}, \frac{\mathrm{d}y}{\mathrm{d}x}, \frac{\partial^2}{\partial x_1\partial x_2}y

$${\displaystyle dy/dx,\mathrm {d} y/\mathrm {d} x,{\frac {dy}{dx}},{\frac {\mathrm {d} y}{\mathrm {d} x}},{\frac {\partial ^{2}}{\partial x_{1}\partial x_{2}}}y}$$

\prime, \backprime, f^\prime, f', f'', f^{(3)}, \dot y, \ddot y

$${\displaystyle \prime ,\backprime ,f^{\prime},f',f'',f^{(3)}\!,{\dot {y}},{\ddot {y}}}$$

### 类字母符号及常数

\infty, \aleph, \complement, \backepsilon, \eth, \Finv, \hbar

$${\displaystyle \infty ,\aleph ,\complement ,\backepsilon ,\eth ,\Finv ,\hbar}$$

\Im, \imath, \jmath, \Bbbk, \ell, \mho, \wp, \Re, \circledS

$${\displaystyle \Im ,\imath ,\jmath ,\Bbbk ,\ell ,\mho ,\wp ,\Re ,\circledS }$$

### 模运算

s_k \equiv 0 \pmod{m}

$${\displaystyle s_{k}\equiv 0{\pmod {m}}}$$

a \bmod b

$${\displaystyle a \bmod b}$$

\gcd(m, n), \operatorname{lcm}(m, n)

$${\displaystyle \gcd(m,n),\operatorname {lcm} (m,n)}$$

\mid, \nmid, \shortmid, \nshortmid

$${\displaystyle \mid ,\nmid ,\shortmid ,\nshortmid}$$

### 根号

\surd, \sqrt{2}, \sqrt[n]{}, \sqrt[3]{\frac{x^3+y^3}{2}}

$${\displaystyle \surd ,{\sqrt {2}},{\sqrt[{n}]{}},{\sqrt[{3}]{\frac {x^{3}+y^{3}}{2}}}}$$

### 运算符

+, -, \pm, \mp, \dotplus

$${\displaystyle +,-,\pm ,\mp ,\dotplus}$$

\times, \div, \divideontimes, /, \backslash

$${\displaystyle \times ,\div ,\divideontimes ,/,\backslash}$$

\cdot, * \ast, \star, \circ, \bullet

$${\displaystyle \cdot ,*\ast ,\star ,\circ ,\bullet}$$

\boxplus, \boxminus, \boxtimes, \boxdot

$${\displaystyle \boxplus ,\boxminus ,\boxtimes ,\boxdot}$$

\oplus, \ominus, \otimes, \oslash, \odot

$${\displaystyle \oplus ,\ominus ,\otimes ,\oslash ,\odot}$$

\circleddash, \circledcirc, \circledast

$${\displaystyle \circleddash ,\circledcirc ,\circledast}$$

\bigoplus, \bigotimes, \bigodot

$${\displaystyle \bigoplus ,\bigotimes ,\bigodot}$$

### 集合

\{ \}, \O \empty \emptyset, \varnothing

$${\displaystyle \{\},\emptyset \emptyset \emptyset ,\varnothing }$$

\in, \notin \not\in, \ni, \not\ni

$${\displaystyle \in ,\notin \not \in ,\ni ,\not \ni}$$

\cap, \Cap, \sqcap, \bigcap

$${\displaystyle \cap ,\Cap ,\sqcap ,\bigcap}$$

\cup, \Cup, \sqcup, \bigcup, \bigsqcup, \uplus, \biguplus

$${\displaystyle \cup ,\Cup ,\sqcup ,\bigcup ,\bigsqcup ,\uplus ,\biguplus}$$

\setminus, \smallsetminus, \times

$${\displaystyle \setminus ,\smallsetminus ,\times}$$

\subset, \Subset, \sqsubset

$${\displaystyle \subset ,\Subset ,\sqsubset}$$

\supset, \Supset, \sqsupset

$${\displaystyle \supset ,\Supset ,\sqsupset}$$

\subseteq, \nsubseteq, \subsetneq, \varsubsetneq, \sqsubseteq

$${\displaystyle \subseteq ,\nsubseteq ,\subsetneq ,\varsubsetneq ,\sqsubseteq}$$

\supseteq, \nsupseteq, \supsetneq, \varsupsetneq, \sqsupseteq

$${\displaystyle \supseteq ,\nsupseteq ,\supsetneq ,\varsupsetneq ,\sqsupseteq}$$

\subseteqq, \nsubseteqq, \subsetneqq, \varsubsetneqq

$${\displaystyle \subseteqq ,\nsubseteqq ,\subsetneqq ,\varsubsetneqq}$$

\supseteqq, \nsupseteqq, \supsetneqq, \varsupsetneqq

$${\displaystyle \supseteqq ,\nsupseteqq ,\supsetneqq ,\varsupsetneqq}$$

### 关系符号

=, \ne, \neq, \equiv, \not\equiv

$${\displaystyle =,\neq ,\neq ,\equiv ,\not \equiv}$$

\doteq, \doteqdot, \overset{\underset{\mathrm{def}}{}}{=}, :=

$${\displaystyle \doteq ,\doteqdot ,{\overset {\underset {\mathrm {def} }{}}{=}},:=}$$

\sim, \nsim, \backsim, \thicksim, \simeq, \backsimeq, \eqsim, \cong, \ncong

$${\displaystyle \sim ,\nsim ,\backsim ,\thicksim ,\simeq ,\backsimeq ,\eqsim ,\cong ,\ncong}$$

\approx, \thickapprox, \approxeq, \asymp, \propto, \varpropto

$${\displaystyle \approx ,\thickapprox ,\approxeq ,\asymp ,\propto ,\varpropto}$$

<, \nless, \ll, \not\ll, \lll, \not\lll, \lessdot

$${\displaystyle <,\nless ,\ll ,\not \ll ,\lll ,\not \lll ,\lessdot}$$

>, \ngtr, \gg, \not\gg, \ggg, \not\ggg, \gtrdot

$${\displaystyle>,\ngtr ,\gg ,\not \gg ,\ggg ,\not \ggg ,\gtrdot }$$

\le, \leq, \lneq, \leqq, \nleq, \nleqq, \lneqq, \lvertneqq

$${\displaystyle \leq ,\leq ,\lneq ,\leqq ,\nleq ,\nleqq ,\lneqq ,\lvertneqq}$$

\ge, \geq, \gneq, \geqq, \ngeq, \ngeqq, \gneqq, \gvertneqq

$${\displaystyle \geq ,\geq ,\gneq ,\geqq ,\ngeq ,\ngeqq ,\gneqq ,\gvertneqq}$$

\lessgtr, \lesseqgtr, \lesseqqgtr, \gtrless, \gtreqless, \gtreqqless

$${\displaystyle \lessgtr ,\lesseqgtr ,\lesseqqgtr ,\gtrless ,\gtreqless ,\gtreqqless}$$

\leqslant, \nleqslant, \eqslantless

$${\displaystyle \leqslant ,\nleqslant ,\eqslantless}$$

\geqslant, \ngeqslant, \eqslantgtr

$${\displaystyle \geqslant ,\ngeqslant ,\eqslantgtr}$$

\lesssim, \lnsim, \lessapprox, \lnapprox

$${\displaystyle \lesssim ,\lnsim ,\lessapprox ,\lnapprox}$$

\gtrsim, \gnsim, \gtrapprox, \gnapprox

$${\displaystyle \gtrsim ,\gnsim ,\gtrapprox ,\gnapprox}$$

\prec, \nprec, \preceq, \npreceq, \precneqq

$${\displaystyle \prec ,\nprec ,\preceq ,\npreceq ,\precneqq}$$

\succ, \nsucc, \succeq, \nsucceq, \succneqq

$${\displaystyle \succ ,\nsucc ,\succeq ,\nsucceq ,\succneqq}$$

\preccurlyeq, \curlyeqprec

$${\displaystyle \preccurlyeq ,\curlyeqprec}$$

\succcurlyeq, \curlyeqsucc

$${\displaystyle \succcurlyeq ,\curlyeqsucc}$$

\precsim, \precnsim, \precapprox, \precnapprox

$${\displaystyle \precsim ,\precnsim ,\precapprox ,\precnapprox}$$

\succsim, \succnsim, \succapprox, \succnapprox

$${\displaystyle \succsim ,\succnsim ,\succapprox ,\succnapprox}$$

### 几何符号

\parallel, \nparallel, \shortparallel, \nshortparallel

$${\displaystyle \parallel ,\nparallel ,\shortparallel ,\nshortparallel}$$

\perp, \angle, \sphericalangle, \measuredangle, 45^\circ

$${\displaystyle \perp ,\angle ,\sphericalangle ,\measuredangle ,45^{\circ}}$$

\Box, \blacksquare, \diamond, \Diamond \lozenge, \blacklozenge, \bigstar

$${\displaystyle \Box ,\blacksquare ,\diamond ,\Diamond \lozenge ,\blacklozenge ,\bigstar}$$

\bigcirc, \triangle, \bigtriangleup, \bigtriangledown

$${\displaystyle \bigcirc ,\triangle ,\bigtriangleup ,\bigtriangledown}$$

\vartriangle, \triangledown

$${\displaystyle \vartriangle ,\triangledown}$$

\blacktriangle, \blacktriangledown, \blacktriangleleft, \blacktriangleright

$${\displaystyle \blacktriangle ,\blacktriangledown ,\blacktriangleleft ,\blacktriangleright}$$

### 逻辑符号

\forall, \exists, \nexists

$${\displaystyle \forall ,\exists ,\nexists}$$

\therefore, \because, \And

$${\displaystyle \therefore ,\because ,\And}$$

\or \lor \vee, \curlyvee, \bigvee

$${\displaystyle \lor ,\lor ,\vee ,\curlyvee ,\bigvee}$$

\and \land \wedge, \curlywedge, \bigwedge

$${\displaystyle \land ,\land ,\wedge ,\curlywedge ,\bigwedge}$$

\bar{q}, \bar{abc}, \overline{q}, \overline{abc},

\lnot \neg, \not\operatorname{R}, \bot, \top

$${\displaystyle {\bar {q}},{\bar {abc}},{\overline {q}},{\overline {abc}},}$$

$${\displaystyle \lnot \neg ,\not \operatorname {R} ,\bot ,\top }$$

\vdash \dashv, \vDash, \Vdash, \models

$${\displaystyle \vdash ,\dashv ,\vDash ,\Vdash ,\models}$$

\Vvdash \nvdash \nVdash \nvDash \nVDash

$${\displaystyle \Vvdash ,\nvdash ,\nVdash ,\nvDash ,\nVDash}$$

\ulcorner \urcorner \llcorner \lrcorner

$${\displaystyle \ulcorner \urcorner \llcorner \lrcorner}$$

### 箭头

\Rrightarrow, \Lleftarrow

$${\displaystyle \Rrightarrow ,\Lleftarrow}$$

\Rightarrow, \nRightarrow, \Longrightarrow \implies

$${\displaystyle \Rightarrow ,\nRightarrow ,\Longrightarrow ,\implies}$$

\Leftarrow, \nLeftarrow, \Longleftarrow

$${\displaystyle \Leftarrow ,\nLeftarrow ,\Longleftarrow}$$

\Leftrightarrow, \nLeftrightarrow, \Longleftrightarrow \iff

$${\displaystyle \Leftrightarrow ,\nLeftrightarrow ,\Longleftrightarrow \iff}$$

\Uparrow, \Downarrow, \Updownarrow

$${\displaystyle \Uparrow ,\Downarrow ,\Updownarrow}$$

\rightarrow \to, \nrightarrow, \longrightarrow

$${\displaystyle \rightarrow \to ,\nrightarrow ,\longrightarrow}$$

\leftarrow \gets, \nleftarrow, \longleftarrow

$${\displaystyle \leftarrow \gets ,\nleftarrow ,\longleftarrow}$$

\leftrightarrow, \nleftrightarrow, \longleftrightarrow

$${\displaystyle \leftrightarrow ,\nleftrightarrow ,\longleftrightarrow}$$

\uparrow, \downarrow, \updownarrow

$${\displaystyle \uparrow ,\downarrow ,\updownarrow}$$

\nearrow, \swarrow, \nwarrow, \searrow

$${\displaystyle \nearrow ,\swarrow ,\nwarrow ,\searrow}$$

\mapsto, \longmapsto

$${\displaystyle \mapsto ,\longmapsto}$$

\rightharpoonup \rightharpoondown \leftharpoonup \leftharpoondown \upharpoonleft \upharpoonright \downharpoonleft \downharpoonright \rightleftharpoons \leftrightharpoons

$${\displaystyle \rightharpoonup ,\rightharpoondown ,\leftharpoonup ,\leftharpoondown ,\upharpoonleft ,\upharpoonright ,\downharpoonleft ,\downharpoonright ,\rightleftharpoons ,\leftrightharpoons}$$

\curvearrowleft \circlearrowleft \Lsh \upuparrows \rightrightarrows \rightleftarrows \rightarrowtail \looparrowright

$${\displaystyle \curvearrowleft ,\circlearrowleft ,\Lsh ,\upuparrows ,\rightrightarrows ,\rightleftarrows ,\rightarrowtail ,\looparrowright}$$

\curvearrowright \circlearrowright \Rsh \downdownarrows \leftleftarrows \leftrightarrows \leftarrowtail \looparrowleft

$${\displaystyle \curvearrowright ,\circlearrowright ,\Rsh ,\downdownarrows ,\leftleftarrows ,\leftrightarrows ,\leftarrowtail ,\looparrowleft}$$

\hookrightarrow \hookleftarrow \multimap \leftrightsquigarrow \rightsquigarrow \twoheadrightarrow \twoheadleftarrow

$${\displaystyle \hookrightarrow ,\hookleftarrow ,\multimap ,\leftrightsquigarrow ,\rightsquigarrow ,\twoheadrightarrow ,\twoheadleftarrow}$$

### 特殊符号

\amalg \% \dagger \ddagger \ldots \cdots

$${\displaystyle \amalg \%\dagger \ddagger \ldots \cdots}$$

\smile \frown \wr \triangleleft \triangleright

$${\displaystyle \smile \frown \wr \triangleleft \triangleright}$$

\diamondsuit, \heartsuit, \clubsuit, \spadesuit, \Game, \flat, \natural, \sharp

$${\displaystyle \diamondsuit ,\heartsuit ,\clubsuit ,\spadesuit ,\Game ,\flat ,\natural ,\sharp}$$

### 未分类

\diagup \diagdown \centerdot \ltimes \rtimes \leftthreetimes \rightthreetimes

$${\displaystyle \diagup ,\diagdown ,\centerdot ,\ltimes ,\rtimes ,\leftthreetimes ,\rightthreetimes}$$

\eqcirc \circeq \triangleq \bumpeq \Bumpeq \doteqdot \risingdotseq \fallingdotseq

$${\displaystyle \eqcirc ,\circeq ,\triangleq ,\bumpeq ,\Bumpeq ,\doteqdot ,\risingdotseq ,\fallingdotseq}$$

\intercal \barwedge \veebar \doublebarwedge \between \pitchfork

$${\displaystyle \intercal ,\barwedge ,\veebar ,\doublebarwedge ,\between ,\pitchfork}$$

\vartriangleleft \ntriangleleft \vartriangleright \ntriangleright

$${\displaystyle \vartriangleleft ,\ntriangleleft ,\vartriangleright ,\ntriangleright}$$

\trianglelefteq \ntrianglelefteq \trianglerighteq \ntrianglerighteq

$${\displaystyle \trianglelefteq ,\ntrianglelefteq ,\trianglerighteq ,\ntrianglerighteq}$$

## 上标、下标及积分等

^ 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。

a^2

$${\displaystyle a^{2}}$$

a_2

$${\displaystyle a_{2}}$$

a^{2+2}

$${\displaystyle a^{2+2}}$$

a_{i,j}

$${\displaystyle a_{i,j}}$$

x_2^3

$${\displaystyle x_{2}^{3}}$$

{}_1^2\!X_3^4

$${\displaystyle {}_{1}^{2}\!X_{3}^{4}}$$

x'

$${\displaystyle x'}$$

x^\prime

$${\displaystyle x^{\prime}}$$

x\prime

$${\displaystyle x\prime}$$

\dot{x}

$${\displaystyle {\dot {x}}}$$

\ddot{y}

$${\displaystyle {\ddot {y}}}$$

\vec{c}（只有一个字母）

$${\displaystyle {\vec {c}}}$$

\overleftarrow{a b}

$${\displaystyle {\overleftarrow {ab}}}$$

\overrightarrow{c d}

$${\displaystyle {\overrightarrow {cd}}}$$

\overleftrightarrow{a b}

$${\displaystyle {\overleftrightarrow {ab}}}$$

\widehat{e f g}

$${\displaystyle {\widehat {efg}}}$$

（注: 正确应该用 \overarc，但在这里行不通。要用建议的语法作为解决办法。）（使用 \ overarc 时需要引入 {arcs} 包。）

\overset{\frown} {AB}

$${\displaystyle {\overset {\frown}{AB}}}$$

\overline{h i j}

$${\displaystyle {\overline {hij}}}$$

\underline{k l m}

$${\displaystyle {\underline {klm}}}$$

\overbrace{1+2+\cdots+100}

$${\displaystyle \overbrace {1+2+\cdots +100} }$$

\begin{matrix} 5050 \\ \overbrace{ 1+2+\cdots+100 } \end{matrix}

$${\displaystyle {\begin{matrix}5050\\\overbrace {1+2+\cdots +100} \end{matrix}}}$$

\underbrace{a+b+\cdots+z}

$${\displaystyle \underbrace {a+b+\cdots +z} }$$

\begin{matrix} \underbrace{ a+b+\cdots+z } \\ 26 \end{matrix}

$${\displaystyle {\begin{matrix}\underbrace {a+b+\cdots +z} \\26\end{matrix}}}$$

\sum_{k=1}^N k^2

$${\displaystyle \sum _{k=1}^{N}k^{2}}$$

\begin{matrix} \sum_{k=1}^N k^2 \end{matrix}

$${\displaystyle {\begin{matrix}\sum _{k=1}^{N}k^{2}\end{matrix}}}$$

\prod_{i=1}^N x_i

$${\displaystyle \prod _{i=1}^{N}x_{i}}$$

\begin{matrix} \prod_{i=1}^N x_i \end{matrix}

$${\displaystyle {\begin{matrix}\prod _{i=1}^{N}x_{i}\end{matrix}}}$$

\coprod_{i=1}^N x_i

$${\displaystyle \coprod _{i=1}^{N}x_{i}}$$

\begin{matrix} \coprod_{i=1}^N x_i \end{matrix}

$${\displaystyle {\begin{matrix}\coprod _{i=1}^{N}x_{i}\end{matrix}}}$$

\lim_{n \to \infty}x_n

$${\displaystyle \lim _{n\to \infty}x_{n}}$$

\begin{matrix} \lim_{n \to \infty}x_n \end{matrix}

$${\displaystyle {\begin{matrix}\lim _{n\to \infty }x_{n}\end{matrix}}}$$

\int_{-N}^{N} e^x\, {\rm d}x

$${\displaystyle \int _{-N}^{N}e^{x}\,{\rm d} x}$$

\begin{matrix} \int_{-N}^{N} e^x\, \mathrm{d}x \end{matrix}（矩阵中积分符号变小）

$${\displaystyle {\begin{matrix}\int _{-N}^{N}e^{x}\,\mathrm {d} x\end{matrix}}}$$

\iint_{D}^{W} \, \mathrm{d}x\,\mathrm{d}y

$${\displaystyle \iint _{D}^{W}\,\mathrm {d} x\,\mathrm {d} y}$$

\iiint_{E}^{V} \, \mathrm{d}x\,\mathrm{d}y\,\mathrm{d}z

$${\displaystyle \iiint _{E}^{V}\,\mathrm {d} x\,\mathrm {d} y\,\mathrm {d} z}$$

\oint_{C} x^3\, \mathrm{d}x + 4y^2\, \mathrm{d}y

$${\displaystyle \oint _{C}x^{3}\,\mathrm {d} x+4y^{2}\,\mathrm {d} y}$$

\bigcap_1^{n} p

$${\displaystyle \bigcap _{1}^{n}p}$$

\bigcup_1^{k} p

$${\displaystyle \bigcup _{1}^{k}p}$$

## 分数

\frac{2}{4}=0.5

$${\displaystyle {\frac {2}{4}}=0.5}$$

\tfrac{2}{4} = 0.5

$${\displaystyle {\tfrac {2}{4}}=0.5}$$

\cfrac{2}{c + \cfrac{2}{d + \cfrac{2}{4}}} = a

$${\displaystyle {\cfrac {2}{c+{\cfrac {2}{d+{\cfrac {2}{4}}}}}}=a}$$

\dfrac{2}{4} = 0.5 \qquad \dfrac{2}{c + \dfrac{2}{d + \dfrac{2}{4}}} = a

$${\displaystyle {\dfrac {2}{4}}=0.5\qquad {\dfrac {2}{c+{\dfrac {2}{d+{\dfrac {2}{4}}}}}}=a}$$

\dbinom{n}{r}=\binom{n}{n-r}=\mathrm{C}_n^r=\mathrm{C}_n^{n-r}

$${\displaystyle {\dbinom {n}{r}}={\binom {n}{n-r}}=\mathrm {C} _{n}^{r}=\mathrm {C} _{n}^{n-r}}$$

\tbinom{n}{r}=\tbinom{n}{n-r}=\mathrm{C}_n^r=\mathrm{C}_n^{n-r}

$${\displaystyle {\tbinom {n}{r}}={\tbinom {n}{n-r}}=\mathrm {C} _{n}^{r}=\mathrm {C} _{n}^{n-r}}$$

\binom{n}{r}=\dbinom{n}{n-r}=\mathrm{C}_n^r=\mathrm{C}_n^{n-r}

$${\displaystyle {\binom {n}{r}}={\dbinom {n}{n-r}}=\mathrm {C} _{n}^{r}=\mathrm {C} _{n}^{n-r}}$$

• 例子：
\begin{array}{cc}
\hline \\
\int_{-\frac\pi2}^\frac\pi2 \sin x\,dx & \int_{-\pi/2}^{\pi/2}\sin x\,dx \\
\end{array}

• 显示：

$\begin{array}{cc} \mathrm{Bad} & \mathrm{Better} \\ \hline \\ e^{i\frac{\pi}2} \quad e^{\frac{i\pi}2}& e^{i\pi/2} \\ \int_{-\frac\pi2}^\frac\pi2 \sin x\,dx & \int_{-\pi/2}^{\pi/2}\sin x\,dx \\ \end{array}$

## 矩阵、条件表达式、方程组

\begin{类型}

\end{类型}


### 无框矩阵

\begin{matrix}
x & y \\
z & v
\end{matrix}


$${\displaystyle {\begin{matrix}x&y\\z&v\end{matrix}}}$$

### 有框矩阵

\begin{vmatrix}
x & y \\
z & v
\end{vmatrix}


$${\displaystyle {\begin{vmatrix}x&y\\z&v\end{vmatrix}}}$$

\begin{Vmatrix}
x & y \\
z & v
\end{Vmatrix}


$${\displaystyle {\begin{Vmatrix}x&y\\z&v\end{Vmatrix}}}$$

\begin{bmatrix}
0      & \cdots & 0      \\
\vdots & \ddots & \vdots \\
0      & \cdots & 0
\end{bmatrix}


$${\displaystyle {\begin{bmatrix}0&\cdots &0\\\vdots &\ddots &\vdots \\0&\cdots &0\end{bmatrix}}}$$

\begin{Bmatrix}
x & y \\
z & v
\end{Bmatrix}


$${\displaystyle {\begin{Bmatrix}x&y\\z&v\end{Bmatrix}}}$$

\begin{pmatrix}
x & y \\
z & v
\end{pmatrix}


$${\displaystyle {\begin{pmatrix}x&y\\z&v\end{pmatrix}}}$$

### 条件表达式

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


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

### 多行等式、同余式

\begin{aligned}
f(x) & = (m+n)^2 \\
& = m^2+2mn+n^2 \\
\end{aligned}



{\displaystyle {\begin{aligned}f(x)&=(m+n)^{2}\\&=m^{2}+2mn+n^{2}\\\end{aligned}}}

\begin{aligned}
3^{6n+3}+4^{6n+3}
& \equiv (3^3)^{2n+1}+(4^3)^{2n+1}\\
& \equiv 27^{2n+1}+64^{2n+1}\\
& \equiv 27^{2n+1}+(-27)^{2n+1}\\
& \equiv 27^{2n+1}-27^{2n+1}\\
& \equiv 0 \pmod{91}\\
\end{aligned}


{\displaystyle {\begin{aligned}3^{6n+3}+4^{6n+3}&\equiv (3^{3})^{2n+1}+(4^{3})^{2n+1}\\&\equiv 27^{2n+1}+64^{2n+1}\\&\equiv 27^{2n+1}+(-27)^{2n+1}\\&\equiv 27^{2n+1}-27^{2n+1}\\&\equiv 0{\pmod {91}}\\\end{aligned}}}

\begin{alignedat}{3}
f(x) & = (m-n)^2 \\
f(x) & = (-m+n)^2 \\
& = m^2-2mn+n^2 \\
\end{alignedat}


{\displaystyle {\begin{alignedat}{3}f(x)&=(m-n)^{2}\\f(x)&=(-m+n)^{2}\\&=m^{2}-2mn+n^{2}\\\end{alignedat}}}

### 方程组

\begin{cases}
3x + 5y +  z \\
7x - 2y + 4z \\
-6x + 3y + 2z
\end{cases}


${\displaystyle {\begin{cases}3x+5y+z\\7x-2y+4z\\-6x+3y+2z\end{cases}}}$

\left\{\begin{aligned}
3x + 5y +  z \\
7x - 2y + 4z \\
-6x + 3y + 2z
\end{aligned}\right.


\left\{\begin{aligned} 3x + 5y + z \\ 7x - 2y + 4z \\ -6x + 3y + 2z \end{aligned}\right.

## 数组与表格

• 例子：
\begin{array}{c|lcr}
n & \text{左对齐} & \text{居中对齐} & \text{右对齐} \\
\hline
1 & 0.24 & 1 & 125 \\
2 & -1 & 189 & -8 \\
3 & -20 & 2000 & 1+10i
\end{array}

• 显示：

$\begin{array}{c|lcr} n & \text{左对齐} & \text{居中对齐} & \text{右对齐} \\ \hline 1 & 0.24 & 1 & 125 \\ 2 & -1 & 189 & -8 \\ 3 & -20 & 2000 & 1+10i \end{array}$

• 例子:
\begin{array}{lcl}
z        & = & a \\
f(x,y,z) & = & x + y + z
\end{array}

• 显示：

$${\displaystyle {\begin{array}{lcl}z&=&a\\f(x,y,z)&=&x+y+z\end{array}}}$$

• 例子:
\begin{array}{lcr}
z        & = & a \\
f(x,y,z) & = & x + y + z
\end{array}

• 显示:

$${\displaystyle {\begin{array}{lcr}z&=&a\\f(x,y,z)&=&x+y+z\end{array}}}$$

• 例子:
\begin{array}{ccc}
a & b & S \\
\hline
0&0&1\\
0&1&1\\
1&0&1\\
1&1&0\\
\end{array}

• 显示:

${\displaystyle {\begin{array}{ccc}a&b&S\\\hline 0&0&1\\0&1&1\\1&0&1\\1&1&0\\\end{array}}}$

### 嵌套数组或表格

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


• 显示：

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

## 字体

### 希腊字母

\Alpha \Beta \Gamma \Delta \Epsilon \Zeta \Eta \Theta

$${\displaystyle \mathrm {A} \mathrm {B} \Gamma \Delta \mathrm {E} \mathrm {Z} \mathrm {H} \Theta }$$

\Iota \Kappa \Lambda \Mu \Nu \Xi \Omicron \Pi

$${\displaystyle \mathrm {I} \mathrm {K} \Lambda \mathrm {M} \mathrm {N} \mathrm {O} \Xi \Pi }$$

\Rho \Sigma \Tau \Upsilon \Phi \Chi \Psi \Omega

$${\displaystyle \mathrm {P} \Sigma \mathrm {T} \Upsilon \Phi \mathrm {X} \Psi \Omega }$$

\alpha \beta \gamma \delta \epsilon \zeta \eta \theta

$${\displaystyle \alpha \beta \gamma \delta \epsilon \zeta \eta \theta}$$

\iota \kappa \lambda \mu \nu \omicron \xi \pi

$${\displaystyle \iota \kappa \lambda \mu \nu \mathrm {o} \xi \pi }$$

\rho \sigma \tau \upsilon \phi \chi \psi \omega

$${\displaystyle \rho \sigma \tau \upsilon \phi \chi \psi \omega}$$

\varepsilon \digamma \varkappa \varpi

$${\displaystyle \varepsilon \digamma \varkappa \varpi}$$

\varrho \varsigma \vartheta \varphi

$${\displaystyle \varrho \varsigma \vartheta \varphi}$$

### 希伯来符号

\aleph \beth \gimel \daleth

$${\displaystyle \aleph \beth \gimel \daleth}$$

### 部分字体的简称

|输入|说明|显示|输入|说明|显示|
|:--😐:--😐:--😐:--😐:--😐:--😐:--😐
|\rm|罗马体|$$\rm{Sample}$$|\cal|花体|$$\cal{SAMPLE}$$|
|\it|意大利体|$$\it{Sample}$$|\Bbb|黑板粗体|$$\Bbb{SAMPLE}$$|
|\bf|粗体|$$\bf{Sample}$$|\mit|数学斜体|$$\mit{SAMPLE}$$|
|\sf|等线体|$$\sf{Sample}$$|\scr|手写体|$$\scr{SAMPLE}$$|
|\tt|打字机体|$$\tt{Sample}$$|\frak|旧德式字体|$$\frak{Sample}$$|

### 所有字体

#### 黑板报粗体

\mathbb{ABCDEFGHI}

$${\displaystyle \mathbb {ABCDEFGHI} }$$

\mathbb{JKLMNOPQR}

$${\displaystyle \mathbb {JKLMNOPQR} }$$

\mathbb{STUVWXYZ}

$${\displaystyle \mathbb {STUVWXYZ} }$$

#### 粗体

\mathbf{ABCDEFGHI}

$${\displaystyle \mathbf {ABCDEFGHI} }$$

\mathbf{JKLMNOPQR}

$${\displaystyle \mathbf {JKLMNOPQR} }$$

\mathbf{STUVWXYZ}

$${\displaystyle \mathbf {STUVWXYZ} }$$

\mathbf{abcdefghijklm}

$${\displaystyle \mathbf {abcdefghijklm} }$$

\mathbf{nopqrstuvwxyz}

$${\displaystyle \mathbf {nopqrstuvwxyz} }$$

\mathbf{0123456789}

$${\displaystyle \mathbf {0123456789} }$$

#### 粗体希腊字母

\boldsymbol{\Alpha\Beta\Gamma\Delta\Epsilon\Zeta\Eta\Theta}

$${\displaystyle {\boldsymbol {\mathrm {A} \mathrm {B} \Gamma \Delta \mathrm {E} \mathrm {Z} \mathrm {H} \Theta }}}$$

\boldsymbol{\Iota\Kappa\Lambda\Mu\Nu\Xi\Pi\Rho}

$${\displaystyle {\boldsymbol {\mathrm {I} \mathrm {K} \Lambda \mathrm {M} \mathrm {N} \Xi \Pi \mathrm {P} }}}$$

\boldsymbol{\Sigma\Tau\Upsilon\Phi\Chi\Psi\Omega}

$${\displaystyle {\boldsymbol {\Sigma \mathrm {T} \Upsilon \Phi \mathrm {X} \Psi \Omega }}}$$

\boldsymbol{\alpha\beta\gamma\delta\epsilon\zeta\eta\theta}

$${\displaystyle {\boldsymbol {\alpha \beta \gamma \delta \epsilon \zeta \eta \theta}}}$$

\boldsymbol{\iota\kappa\lambda\mu\nu\xi\pi\rho}

$${\displaystyle {\boldsymbol {\iota \kappa \lambda \mu \nu \xi \pi \rho}}}$$

\boldsymbol{\sigma\tau\upsilon\phi\chi\psi\omega}

$${\displaystyle {\boldsymbol {\sigma \tau \upsilon \phi \chi \psi \omega}}}$$

\boldsymbol{\varepsilon\digamma\varkappa\varpi}

$${\displaystyle {\boldsymbol {\varepsilon \digamma \varkappa \varpi}}}$$

\boldsymbol{\varrho\varsigma\vartheta\varphi}

$${\displaystyle {\boldsymbol {\varrho \varsigma \vartheta \varphi}}}$$

#### 斜体（拉丁字母默认）

\mathit{0123456789}

$${\displaystyle {\mathit {0123456789}}}$$

#### 斜体希腊字母（小写字母默认）

\mathit{\Alpha\Beta\Gamma\Delta\Epsilon\Zeta\Eta\Theta}

$${\displaystyle {\mathit {\mathrm {A} \mathrm {B} \Gamma \Delta \mathrm {E} \mathrm {Z} \mathrm {H} \Theta }}}$$

\mathit{\Iota\Kappa\Lambda\Mu\Nu\Xi\Pi\Rho}

$${\displaystyle {\mathit {\mathrm {I} \mathrm {K} \Lambda \mathrm {M} \mathrm {N} \Xi \Pi \mathrm {P} }}}$$

\mathit{\Sigma\Tau\Upsilon\Phi\Chi\Psi\Omega}

$${\displaystyle {\mathit {\Sigma \mathrm {T} \Upsilon \Phi \mathrm {X} \Psi \Omega }}}$$

#### 罗马体

\mathrm{ABCDEFGHI}

$${\displaystyle \mathrm {ABCDEFGHI} }$$

\mathrm{JKLMNOPQR}

$${\displaystyle \mathrm {JKLMNOPQR} }$$

\mathrm{STUVWXYZ}

$${\displaystyle \mathrm {STUVWXYZ} }$$

\mathrm{abcdefghijklm}

$${\displaystyle \mathrm {abcdefghijklm} }$$

\mathrm{nopqrstuvwxyz}

$${\displaystyle \mathrm {nopqrstuvwxyz} }$$

\mathrm{0123456789}

$${\displaystyle \mathrm {0123456789} }$$

#### 无衬线体

\mathsf{ABCDEFGHI}

$${\displaystyle {\mathsf {ABCDEFGHI}}}$$

\mathsf{JKLMNOPQR}

$${\displaystyle {\mathsf {JKLMNOPQR}}}$$

\mathsf{STUVWXYZ}

$${\displaystyle {\mathsf {STUVWXYZ}}}$$

\mathsf{abcdefghijklm}

$${\displaystyle {\mathsf {abcdefghijklm}}}$$

\mathsf{nopqrstuvwxyz}

$${\displaystyle {\mathsf {nopqrstuvwxyz}}}$$

\mathsf{0123456789}

$${\displaystyle {\mathsf {0123456789}}}$$

#### 无衬线体希腊字母（仅大写）

\mathsf{\Alpha \Beta \Gamma \Delta \Epsilon \Zeta \Eta \Theta}

$${\displaystyle {\mathsf {\mathrm {A} \mathrm {B} \Gamma \Delta \mathrm {E} \mathrm {Z} \mathrm {H} \Theta }}}$$

\mathsf{\Iota \Kappa \Lambda \Mu \Nu \Xi \Pi \Rho}

$${\displaystyle {\mathsf {\mathrm {I} \mathrm {K} \Lambda \mathrm {M} \mathrm {N} \Xi \Pi \mathrm {P} }}}$$

\mathsf{\Sigma \Tau \Upsilon \Phi \Chi \Psi \Omega}

$${\displaystyle {\mathsf {\Sigma \mathrm {T} \Upsilon \Phi \mathrm {X} \Psi \Omega }}}$$

#### 手写体 / 花体

\mathcal{ABCDEFGHI}

$${\displaystyle {\mathcal {ABCDEFGHI}}}$$

\mathcal{JKLMNOPQR}

$${\displaystyle {\mathcal {JKLMNOPQR}}}$$

\mathcal{STUVWXYZ}

$${\displaystyle {\mathcal {STUVWXYZ}}}$$

#### Fraktur 体

\mathfrak{ABCDEFGHI}

$${\displaystyle {\mathfrak {ABCDEFGHI}}}$$

\mathfrak{JKLMNOPQR}

$${\displaystyle {\mathfrak {JKLMNOPQR}}}$$

\mathfrak{STUVWXYZ}

$${\displaystyle {\mathfrak {STUVWXYZ}}}$$

\mathfrak{abcdefghijklm}

$${\displaystyle {\mathfrak {abcdefghijklm}}}$$

\mathfrak{nopqrstuvwxyz}

$${\displaystyle {\mathfrak {nopqrstuvwxyz}}}$$

\mathfrak{0123456789}

$${\displaystyle {\mathfrak {0123456789}}}$$

#### 小型手写体

{\scriptstyle\text{abcdefghijklm}}

$${\displaystyle {\scriptstyle {\text{abcdefghijklm}}}}$$

### 混合字体

x y z

$${\displaystyle xyz}$$

\text{x y z}

$${\displaystyle {\text{x y z}}}$$

\text{if} n \text{is even}

$${\displaystyle {\text{if}}n{\text{is even}}}$$

\text{if }n\text{ is even}

$${\displaystyle {\text{if }}n{\text{ is even}}}$$

\text{if}~n\ \text{is even}

$${\displaystyle {\text{if}}~n\ {\text{is even}}}$$

### 注释文本

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

• 显示：

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

## 括号

()[]| 表示符号本身，使用 \{\} 来表示 {}

\frac{1}{2}

$${\displaystyle ({\frac {1}{2}})}$$

\left(\frac{1}{2} \right)

$${\displaystyle \left({\frac {1}{2}}\right)}$$

\left( \frac{a}{b} \right)

$${\displaystyle \left({\frac {a}{b}}\right)}$$

\left[ \frac{a}{b} \right]

$${\displaystyle \left[{\frac {a}{b}}\right]}$$

\left\{ \frac{a}{b} \right\}

$${\displaystyle \left\{{\frac {a}{b}}\right\}}$$

\left \langle \frac{a}{b} \right \rangle

$${\displaystyle \left\langle {\frac {a}{b}}\right\rangle }$$

\left| \frac{a}{b} \right|

$${\displaystyle \left| \frac{a}{b} \right|}$$

\left \| \frac{a}{b} \right \|

$${\displaystyle \left\|{\frac {a}{b}}\right\|}$$

\left \lfloor \frac{a}{b} \right \rfloor

$${\displaystyle \left\lfloor {\frac {a}{b}}\right\rfloor }$$

\left \lceil \frac{c}{d} \right \rceil

$${\displaystyle \left\lceil {\frac {c}{d}}\right\rceil }$$

\left / \frac{a}{b} \right \backslash

$${\displaystyle \left/{\frac {a}{b}}\right\backslash }$$

\left \uparrow \frac{a}{b} \right \downarrow

$${\displaystyle \left\uparrow {\frac {a}{b}}\right\downarrow }$$

\left \Uparrow \frac{a}{b} \right \Downarrow

$${\displaystyle \left\Uparrow {\frac {a}{b}}\right\Downarrow }$$

\left \updownarrow \frac{a}{b} \right \Updownarrow

$${\displaystyle \left\updownarrow {\frac {a}{b}}\right\Updownarrow }$$

\left[ 0,1 \right)

$${\displaystyle \left[0,1\right)}$$

\left \langle \psi \right |

$$\left \langle \psi \right |$$

\left \{\frac{a}{b} \right.

$${\displaystyle \left\{{\frac {a}{b}}\right.}$$

\left. \frac{a}{b} \right \}

$${\displaystyle \left.{\frac {a}{b}}\right\}}$$

• 可以使用 \big, \Big, \bigg, \Bigg 控制括号的大小，比如代码

\Bigg ( \bigg [ \Big \{ \big \langle \left | \| \frac{a}{b} \| \right | \big \rangle \Big \} \bigg ] \Bigg )

显示︰

$\Bigg ( \bigg [ \Big \{ \big \langle \left | \| \frac{a}{b} \| \right | \big \rangle \Big \} \bigg ] \Bigg )$

## 空格

\alpha\qquad\beta

$${\displaystyle \alpha \qquad \beta}$$

$${\displaystyle mm}$$

\alpha\quad\beta

$${\displaystyle \alpha \quad \beta}$$

$${\displaystyle m}$$

### 大空格

\alpha\ \beta

$${\displaystyle \alpha \ \beta}$$

$${\displaystyle {\frac{m}{3}}}$$

### 中等空格

\alpha\;\beta

$${\displaystyle \alpha \;\beta}$$

$${\displaystyle {\frac {2m}{7}}}$$

### 小空格

\alpha\,\beta

$${\displaystyle \alpha \,\beta}$$

$${\displaystyle {\frac {m}{6}}}$$

### 没有空格

\alpha\beta

$${\displaystyle \alpha \beta }$$

$${\displaystyle 0}$$

### 紧贴

\alpha\!\beta

$${\displaystyle \alpha \!\beta}$$

$${\displaystyle -{\frac {m}{6}}}$$

## 颜色

### Cmd Markdown 公式指导手册里是这样写的：

black $$\color{black}{text}$$ grey $$\color{grey}{text}$$
silver $$\color{silver}{text}$$ white $$\color{white}{text}$$
maroon $$\color{maroon}{text}$$ red $$\color{red}{text}$$
yellow $$\color{yellow}{text}$$ lime $$\color{lime}{text}$$
olive $$\color{olive}{text}$$ green $$\color{green}{text}$$
teal $$\color{teal}{text}$$ auqa $$\color{auqa}{text}$$
blue $$\color{blue}{text}$$ navy $$\color{navy}{text}$$
purple $$\color{purple}{text}$$ fuchsia $$\color{fuchsia}{text}$$

• 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：

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

### 维基百科的数学公式教程里是这样写的：

{\color{Red}abc}显示$${\color{Red}abc}$$
\color{Red}{abc}显示$$\color{Red}{abc}$$

$${\displaystyle \color {Apricot}{\text{Apricot}}}$$

$${\displaystyle \color {Aquamarine}{\text{Aquamarine}}}$$

$${\displaystyle \color {Bittersweet}{\text{Bittersweet}}}$$

$${\displaystyle \color {Black}{\text{Black}}}$$

$${\displaystyle \color {Blue}{\text{Blue}}}$$

$${\displaystyle \color {BlueGreen}{\text{BlueGreen}}}$$

$${\displaystyle \color {BlueViolet}{\text{BlueViolet}}}$$

$${\displaystyle \color {BrickRed}{\text{BrickRed}}}$$

$${\displaystyle \color {Brown}{\text{Brown}}}$$

$${\displaystyle \color {BurntOrange}{\text{BurntOrange}}}$$

$${\displaystyle \color {CadetBlue}{\text{CadetBlue}}}$$

$${\displaystyle \color {CarnationPink}{\text{CarnationPink}}}$$

$${\displaystyle \color {Cerulean}{\text{Cerulean}}}$$

$${\displaystyle \color {CornflowerBlue}{\text{CornflowerBlue}}}$$

$${\displaystyle \color {Cyan}{\text{Cyan}}}$$

$${\displaystyle \color {Dandelion}{\text{Dandelion}}}$$

$${\displaystyle \color {DarkOrchid}{\text{DarkOrchid}}}$$

$${\displaystyle \color {Emerald}{\text{Emerald}}}$$

$${\displaystyle \color {ForestGreen}{\text{ForestGreen}}}$$

$${\displaystyle \color {Fuchsia}{\text{Fuchsia}}}$$

$${\displaystyle \color {Goldenrod}{\text{Goldenrod}}}$$

$${\displaystyle \color {Gray}{\text{Gray}}}$$

$${\displaystyle \color {Green}{\text{Green}}}$$

$${\displaystyle \color {GreenYellow}{\text{GreenYellow}}}$$

$${\displaystyle \color {JungleGreen}{\text{JungleGreen}}}$$

$${\displaystyle \color {Lavender}{\text{Lavender}}}$$

$${\displaystyle \color {LimeGreen}{\text{LimeGreen}}}$$

$${\displaystyle \color {Magenta}{\text{Magenta}}}$$

$${\displaystyle \color {Mahogany}{\text{Mahogany}}}$$

$${\displaystyle \color {Maroon}{\text{Maroon}}}$$

$${\displaystyle \color {Melon}{\text{Melon}}}$$

$${\displaystyle \color {MidnightBlue}{\text{MidnightBlue}}}$$

$${\displaystyle \color {Mulberry}{\text{Mulberry}}}$$

$${\displaystyle \color {NavyBlue}{\text{NavyBlue}}}$$

$${\displaystyle \color {OliveGreen}{\text{OliveGreen}}}$$

$${\displaystyle \color {Orange}{\text{Orange}}}$$

$${\displaystyle \color {OrangeRed}{\text{OrangeRed}}}$$

$${\displaystyle \color {Orchid}{\text{Orchid}}}$$

$${\displaystyle \color {Peach}{\text{Peach}}}$$

$${\displaystyle \color {Periwinkle}{\text{Periwinkle}}}$$

$${\displaystyle \color {PineGreen}{\text{PineGreen}}}$$

$${\displaystyle \color {Plum}{\text{Plum}}}$$

$${\displaystyle \color {ProcessBlue}{\text{ProcessBlue}}}$$

$${\displaystyle \color {Purple}{\text{Purple}}}$$

$${\displaystyle \color {RawSienna}{\text{RawSienna}}}$$

$${\displaystyle \color {Red}{\text{Red}}}$$

$${\displaystyle \color {RedOrange}{\text{RedOrange}}}$$

$${\displaystyle \color {RedViolet}{\text{RedViolet}}}$$

$${\displaystyle \color {Rhodamine}{\text{Rhodamine}}}$$

$${\displaystyle \color {RoyalBlue}{\text{RoyalBlue}}}$$

$${\displaystyle \color {RoyalPurple}{\text{RoyalPurple}}}$$

$${\displaystyle \color {RubineRed}{\text{RubineRed}}}$$

$${\displaystyle \color {Salmon}{\text{Salmon}}}$$

$${\displaystyle \color {SeaGreen}{\text{SeaGreen}}}$$

$${\displaystyle \color {Sepia}{\text{Sepia}}}$$

$${\displaystyle \color {SkyBlue}{\text{SkyBlue}}}$$

$${\displaystyle \color {SpringGreen}{\text{SpringGreen}}}$$

$${\displaystyle \color {Tan}{\text{Tan}}}$$

$${\displaystyle \color {TealBlue}{\text{TealBlue}}}$$

$${\displaystyle \color {Thistle}{\text{Thistle}}}$$

$${\displaystyle \color {Turquoise}{\text{Turquoise}}}$$

$${\displaystyle \color {Violet}{\text{Violet}}}$$

$${\displaystyle \color {VioletRed}{\text{VioletRed}}}$$

$${\displaystyle \color {White}{\text{White}}}$$

$${\displaystyle \color {WildStrawberry}{\text{WildStrawberry}}}$$

$${\displaystyle \color {Yellow}{\text{Yellow}}}$$

$${\displaystyle \color {YellowGreen}{\text{YellowGreen}}}$$

$${\displaystyle \color {YellowOrange}{\text{YellowOrange}}}$$

• {\color{Blue}x^2}+{\color{Brown}2x} - {\color{OliveGreen}1}

$${\displaystyle {\color {Blue}x^{2}}+{\color {Brown}2x}-{\color {OliveGreen}1}}$$

• x_{\color{Maroon}1,2}=\frac{-b\pm\sqrt{{\color{Maroon}b^2-4ac}}}{2a}

$${\displaystyle x_{\color {Maroon}1,2}={\frac {-b\pm {\sqrt {\color {Maroon}b^{2}-4ac}}}{2a}}}$$

## 外部链接

posted @ 2019-10-04 20:49  樱花赞  阅读(278061)  评论(25编辑  收藏  举报