公式标号
显示 | 输入 |
---|---|
|
{a+b}\over {a+b+\cdots +z} |
|
\sqrt{2},\sqrt[n]{3} |
|
\frac{d}{dx} e^{ax} \quad \sum_{i=1}^n (X_i-\overline X)^2 |
|
\vec{a}\cdot \vec{b} |
|
\int_3^2 x^2{\rm d}x |
|
\lim_{n\rightarrow + \infty}n |
|
\prod \frac{1}{i^2} |
|
\sin |
|
\sim |
关系运算符号
显示 | 输入 | 显示 | 输入 |
---|---|---|---|
|
\pm |
|
{n+1}\choose{k} |
|
\times |
|
\sum_{k_0,\ldots >0,\atop k_0+k_1+\cdots =n} |
|
\div |
|
\in,\notin |
|
\sum |
|
\subset,\subseteq,\subsetneqq |
|
\prod |
|
\not\subset |
|
\neq |
|
\cap |
|
\leq |
|
\cup |
|
\geq |
|
空集\emptyset,varnothing
|
|
\otimes |
|
\int,\iint,\iiint,\oint |
|
\odot |
|
\to,\infty,\max,\ge,\le,\neq |
|
\overline |
|
黑体\boldsymbol A
|
|
\underline |
|
空心黑体\mathbb
|
|
\overbrace |
|
手写体\mathcal
|
|
\underbrace |
|
编号\tag{3}
|
|
\hat a , \check a,\breve a |
|
\langle,\rangle |
|
\tilde a,\bar a,\vec a |
|
\forall,\exists,\lnot,\nabla,\partial |
|
\acute a,\grave a,\mathring a |
||
|
\dot a,\ddot a |
||
|
\stackrel{def}{=} |
希腊字母
显示 | 输入 | 显示 | 输入 |
---|---|---|---|
|
A |
|
\alpha |
|
B |
|
\beta |
|
\Gamma |
|
\gamma |
|
\Delta |
|
\delta |
|
E |
|
\epsilon |
|
Z |
|
\varepsilon |
|
H |
|
\zeta |
|
\Theta |
|
\eta |
|
I |
|
\theta |
|
K |
|
\iota |
|
\Lambda |
|
\kappa |
|
M |
|
\lambda |
|
N |
|
\mu |
|
\Xi |
|
\nu |
|
O |
|
\xi |
|
\Pi |
|
\omicron |
|
P |
|
\pi |
|
\Sigma |
|
\rho |
|
T |
|
\sigma |
|
\Upsilon |
|
\tau |
|
\Phi |
|
\upsilon |
|
X |
|
\phi |
|
\Psi |
|
\varpi |
|
\Omega |
|
\chi |
|
\varOmega |
|
\psi |
斜体在输入前加var
|
\varUpsilon
|
|
\omega |
矩阵
显示 | |
---|---|
|
\begin{matrix}1&0&0\\0&1&0\\ \end{matrix} |
|
\begin{pmatrix}1&0&0\\0&1&0\\ \end{pmatrix} |
|
\begin{bmatrix} 1&0&0\\0&1&0\\ \end{bmatrix} |
|
\begin{Bmatrix}1&0&0\\0&1&0\\ \end{Bmatrix} |
|
\begin{vmatrix}1&0&0\\0&1&0\\ \end{vmatrix} |
|
\begin{Vmatrix}1&0&0\\0&1&0\\ \end{Vmatrix} |
|
\cdots |
|
\vdots |
|
\ddots |
|
\begin{bmatrix} a_{11}&a_{12}&\cdots &a_{1n}\\a_{12}&a_{22}&\cdots&a_{2n}\\ \vdots&\vdots&\ddots&\vdots\\a_{1m}&a_{2m} &\cdots&a_{mn}\end{bmatrix} |
阵列
需要array
环境:起始,结束以{array}
声明
对齐方式:在{array}
后以{}
逐行统一声明
- 左对齐:
l
- 居中:
c
- 右对齐:
r
- 竖直线:在声明对齐时,插入
|
竖直线 - 插入水平线:
\hline
例子:
显示 | 输入 |
---|---|
|
`begin{array}{c |