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 |
$\alpha$
|
$\alpha$ | ||
$\beta$
|
$\beta$ | ||
$\gamma$
|
$\gamma$ | $\Gamma$
|
$\Gamma$ |
$\delta$
|
$\delta$ | $\Delta$
|
$\Delta$ |
$\epsilon$
|
$\epsilon$ | ||
$\varepsilon$
|
$\varepsilon$ | ||
$\eta$
|
$\eta$ | ||
$\theta$
|
$\theta$ | ||
$\lambda$
|
$\lambda$ | $\Lambda$
|
$\Lambda$ |
$\mu$
|
$\mu$ | ||
$\nu$
|
$\nu$ | ||
$\xi$
|
$\xi$ | ||
$\pi$
|
$\pi$ | $\Pi$
|
$\Pi$ |
$\rho$
|
$\rho$ | ||
$\sigma$
|
$\sigma$ | $\Sigma$
|
$\Sigma$ |
$\tau$
|
$\tau$ | ||
$\upsilon$
|
$\upsilon$ | ||
$\phi$
|
$\phi$ | ||
$\varphi$
|
$\varphi$ | ||
$\chi$
|
$\chi$ | ||
$\psi$
|
$\psi$ | $\Psi$
|
$\Psi$ |
$\omega$
|
$\omega$ | $\Omega$
|
$\Omega$ |