启用数学公式:
需要插入公式时,用 $
将公式包围。若需要输入多行,则用一对 $$
包围。
例如:
$$\rho = \sqrt{(\Delta x)^{2}+(\Delta y)^{2}} \\\lim\limits_{x \rightarrow x_{ 0}} f(x) = f(x_{0})$$
效果为:
$$ \rho = \sqrt{(\Delta x)^{2}+(\Delta y)^{2}} \\ \lim\limits_{x \rightarrow x_{0}} f(x) = f(x_{0}) $$
最后的双斜杠表示换行。
部分LaTeX符号参考
常用数学公式及符号
输入 | 输出效果 | 输入 | 输出效果 |
$a^{2}$ | $a^{2}$ | $\in$ | $\in$ |
$a_{2}$ | $a_{2}$ | $\left| \frac{a}{b} \right|$ | $\left| \frac{a}{b} \right|$ |
$a_{b}^{c}$ | $a_{b}^{c}$ | $\left| \frac{a}{b} \right|$ | $\left \| \frac{a}{b} \right \|$ |
$\sqrt[n]{2}$ | $\sqrt[n]{2}$ | ||
$\vec a$ | $\vec a$ | ||
$\overrightarrow{AB}$ | $\overrightarrow{AB}$ | ||
$\frac{a}{b+c}$ | $\frac{a}{b+c}$ | ||
$\sum\limits_{i=1}^{n}$ | $\sum\limits_{i=1}^{n}$ | ||
$\prod\limits_{i=1}^{n}$ | $\prod\limits_{i=1}^{n}$ | ||
$\int_{a}^{b}$ | $\int_{a}^{b}$ | ||
$\iint_{a}^{b}$ | $\iint_{a}^{b}$ | ||
$\oint_{a}^{b}$ | $\oint_{a}^{b}$ | ||
$\lim\limits_{x \to 0} \frac{sin x}{x} = 1$ | $\lim\limits_{x \to 0} \frac{sin x}{x} = 1$ | ||
$\lg$ | $\lg$ | ||
$\ln$ | $\ln$ | ||
$\log$ | $\log$ | ||
$\exp$ | $\exp$ | ||
$\thicksim$ | $\thicksim$ | ||
$\simeq$ | $\simeq$ | ||
$\approx$ | $\approx$ | ||
$\equiv$ | $\equiv$ | ||
$\leqslant$ | $\leqslant$ | ||
$\geqslant$ | $\geqslant$ | ||
$\neq$ | $\neq$ | ||
$\pm$ | $\pm$ | ||
$\mp$ | $\mp$/ | ||
$\div$ | $\div$ | ||
$\triangleq$ | $\triangleq$ | ||
$\because$ | $\because$ | ||
$\therefore$ | $\therefore$ | ||
$\Leftarrow$ | $\Leftarrow$ | ||
$\Rightarrow$ | $\Rightarrow$ | ||
$\Leftrightarrow$ | $\Leftrightarrow$ | ||
$\nLeftarrow$ | $\nLeftarrow$ | ||
$\nRightarrow$ | $\nRightarrow$ | ||
$\nLeftrightarrow$ | $\nLeftrightarrow$ | ||
$\infty$ | $\infty$ | ||
$\partial$ | $\partial$ | ||
$\prime$ | $\prime$ | ||
$\varnothing$ | $\varnothing$ | ||
$\forall$ | $\forall$ | ||
$\exists$ | $\exists$ | ||
$\triangle$ | $\triangle$ | ||
$\overline{m+n}$ | $\overline{m+n}$ | ||
$\underline{m+n}$ | $\underline{m+n}$ | ||
$\overbrace{a+b}_{2}$ | $\overbrace{a+b}_{2}$ | ||
$\underbrace{a+b}_{2}$ | $\underbrace{a+b}_{2}$ | ||
$\cdot$ | $\cdot$ |
常用希腊字母大小写对照
输入 | 输出效果 | 输入 | 输出效果 |
$\alpha$ | $\alpha$ | ||
$\beta$ | $\beta$ | ||
$\gamma$ | $\gamma$ | $\Gamma$ | $\Gamma$ |
$\delta$ | $\delta$ | $\Delta$ | $\Delta$ |
$\epsilon$ | $\epsilon$ | ||
$\varepsilon$ | $\varepsilon$ | ||
$\eta$ | $\eta$ | ||
$\theta$ | $\theta$ | ||
$\lambda$ | $\lambda$ | $\Lambda$ | $\Lambda$ |
$\mu$ | $\mu$ | ||
$\nu$ | $\nu$ | ||
$\xi$ | $\xi$ | ||
$\pi$ | $\pi$ | $\Pi$ | $\Pi$ |
$\rho$ | $\rho$ | ||
$\sigma$ | $\sigma$ | $\Sigma$ | $\Sigma$ |
$\tau$ | $\tau$ | ||
$\upsilon$ | $\upsilon$ | ||
$\phi$ | $\phi$ | ||
$\varphi$ | $\varphi$ | ||
$\chi$ | $\chi$ | ||
$\psi$ | $\psi$ | $\Psi$ | $\Psi$ |
$\omega$ | $\omega$ | $\Omega$ | $\Omega$ |