根号 |
\sqrt[3]{3} |
![\sqrt[3]{3}](https://math.jianshu.com/math?formula=%5Csqrt%5B3%5D%7B3%7D) |
分数 |
\frac{分子}{分母} |
![\frac{1}{2}](https://math.jianshu.com/math?formula=%5Cfrac%7B1%7D%7B2%7D) |
求和 |
\sum_{下标}^{上标} |
![\sum_{n=1}^{100}](https://math.jianshu.com/math?formula=%5Csum_%7Bn%3D1%7D%5E%7B100%7D) |
上划线 |
\overline{式子} |
![\overline{a}](https://math.jianshu.com/math?formula=%5Coverline%7Ba%7D) |
下划线 |
\underline{式子} |
![\underline{a}](https://math.jianshu.com/math?formula=%5Cunderline%7Ba%7D) |
罗马体 |
\mathrm{字符} |
![\mathrm{abcdde}](https://math.jianshu.com/math?formula=%5Cmathrm%7Babcdde%7D) |
顶部曲线 |
\tilde{字} |
![\tilde{a}](https://math.jianshu.com/math?formula=%5Ctilde%7Ba%7D) |
约等于 |
\approx |
![a \approx 0](https://math.jianshu.com/math?formula=a%20%5Capprox%200) |
小于等于 |
\leq |
![a \leq 0](https://math.jianshu.com/math?formula=a%20%5Cleq%200) |
字母顶部的小折线 |
\hat{字母} |
![\hat{a}](https://math.jianshu.com/math?formula=%5Chat%7Ba%7D) |
相似符号 |
\sim |
![\Delta ABC \sim \Delta DEF](https://math.jianshu.com/math?formula=%5CDelta%20ABC%20%5Csim%20%5CDelta%20DEF) |
公式编号 |
\tag{} |
![\tag{1}](https://math.jianshu.com/math?formula=%5Ctag%7B1%7D) |
下注释 |
\arg \underset{y}{\max} |
![\arg \underset{y}{\max}](https://math.jianshu.com/math?formula=%5Carg%20%5Cunderset%7By%7D%7B%5Cmax%7D) |
分段函数 |
\begin{eqnarray}y =\begin{cases}\sin(x) & x<0 \x^2 + 2x +4&0 \leq x < 1\ x^3 & x \geq 1\end{cases}\end{eqnarray} |
![\begin{eqnarray}y =\begin{cases}\sin(x) & x<0 \\x^2 + 2x +4&0 \leq x < 1\\ x^3 & x \geq 1\end{cases}\end{eqnarray}](https://math.jianshu.com/math?formula=%5Cbegin%7Beqnarray%7Dy%20%3D%5Cbegin%7Bcases%7D%5Csin(x)%20%26%20x%3C0%20%5C%5Cx%5E2%20%2B%202x%20%2B4%260%20%5Cleq%20x%20%3C%201%5C%5C%20x%5E3%20%26%20x%20%5Cgeq%201%5Cend%7Bcases%7D%5Cend%7Beqnarray%7D) |
梯度 |
\nabla |
![\nabla](https://math.jianshu.com/math?formula=%5Cnabla) |
偏导 |
\partial |
![\partial](https://math.jianshu.com/math?formula=%5Cpartial) |
省略号 |
\cdots,单个为\cdot |
![\cdots , \cdot](https://math.jianshu.com/math?formula=%5Ccdots%20%2C%20%5Ccdot) |
花体大写 |
\mathscr{大写字母} |
![\mathscr{A}](https://math.jianshu.com/math?formula=%5Cmathscr%7BA%7D) |
空集 |
\varnothing |
![\varnothing](https://math.jianshu.com/math?formula=%5Cvarnothing) |
向右箭头 |
\rightarrow |
![\rightarrow](https://math.jianshu.com/math?formula=%5Crightarrow) |
属于 |
\in |
![\in](https://math.jianshu.com/math?formula=%5Cin) |
元素乘(空心圆) |
\circ |
![\circ](https://math.jianshu.com/math?formula=%5Ccirc) |
加粗斜体 |
\boldsymbol{内容} |
![\boldsymbol{A}](https://math.jianshu.com/math?formula=%5Cboldsymbol%7BA%7D) |
|
\mathcal{内容} |
![\mathcal{A}](https://math.jianshu.com/math?formula=%5Cmathcal%7BA%7D) |
|
\mathbb{内容} |
![\mathbb{A}](https://math.jianshu.com/math?formula=%5Cmathbb%7BA%7D) |
正比于 |
\propto |
![\propto](https://math.jianshu.com/math?formula=%5Cpropto) |
无穷 |
\infty |
![\infty](https://math.jianshu.com/math?formula=%5Cinfty) |
任意 |
\forall |
![\forall](https://math.jianshu.com/math?formula=%5Cforall) |
存在 |
\exists |
![\exists](https://math.jianshu.com/math?formula=%5Cexists) |
向量 |
\vec{w} |
![\vec{A}](https://math.jianshu.com/math?formula=%5Cvec%7BA%7D) |
向量点乘 |
\cdot |
![\cdot](https://math.jianshu.com/math?formula=%5Ccdot) |
矩阵 |
\begin{matrix} 0 & 1 \ 1& 0 \end{matrix} |
![\begin{matrix} 0 & 1 \\ 1& 0 \end{matrix}](https://math.jianshu.com/math?formula=%5Cbegin%7Bmatrix%7D%200%20%26%201%20%5C%5C%201%26%200%20%5Cend%7Bmatrix%7D) |
矩阵 |
\begin{bmatrix} 0 & 1 \ 1& 0 \end{bmatrix} |
![\begin{bmatrix} 0 & 1 \\ 1& 0 \end{bmatrix}](https://math.jianshu.com/math?formula=%5Cbegin%7Bbmatrix%7D%200%20%26%201%20%5C%5C%201%26%200%20%5Cend%7Bbmatrix%7D) |
矩阵 |
\begin{Bmatrix} 0 & 1 \ 1& 0 \end{Bmatrix} |
![\begin{Bmatrix} 0 & 1 \\ 1& 0 \end{Bmatrix}](https://math.jianshu.com/math?formula=%5Cbegin%7BBmatrix%7D%200%20%26%201%20%5C%5C%201%26%200%20%5Cend%7BBmatrix%7D) |
矩阵 |
\begin{pmatrix} 0 & 1 \ 1& 0 \end{pmatrix} |
![\begin{pmatrix} 0 & 1 \\ 1& 0 \end{pmatrix}](https://math.jianshu.com/math?formula=%5Cbegin%7Bpmatrix%7D%200%20%26%201%20%5C%5C%201%26%200%20%5Cend%7Bpmatrix%7D) |
矩阵 |
\begin{Vmatrix} 0 & 1 \ 1& 0 \end{Vmatrix} |
![\begin{Vmatrix} 0 & 1 \\ 1& 0 \end{Vmatrix}](https://math.jianshu.com/math?formula=%5Cbegin%7BVmatrix%7D%200%20%26%201%20%5C%5C%201%26%200%20%5Cend%7BVmatrix%7D) |
矩阵 |
\begin{vmatrix} 1 & 3 \ 3 & 3\end{vmatrix} |
![\begin{vmatrix}1&3\\3&3\end{vmatrix}](https://math.jianshu.com/math?formula=%5Cbegin%7Bvmatrix%7D1%263%5C%5C3%263%5Cend%7Bvmatrix%7D) |