Markdown插入数学公式

  在markdown里面插入数学公式, 首先需要选取MathJax引擎, 把以下代码插入md文件即可.

<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=default"></script>

  如果使用hexo之类的框架可以手动配置Mathjax引擎,这样就不需要每次都插入这一行代码.

插入方式

行内插入

\(a + b\)

  因为是在行内插入, 因此需要’\\’进行转义, 告诉引擎这是公式的’(‘而不是文本的’(‘. 当然还有另外一种方式:

$a + b$

  这是一行(a + b)
换行插入

$$a + b$$

$$a + b$$

上下标

$x_1$, $x^2$, $x_1^2$, $x^2_1$, $x_{22}^{(n)}$

  $x_1$,   $x^2$,   $x_1^2$,   $x^2_1$,   $x_{22}^{(n)}$

分式

$\frac{x+y}{2}$, $\frac{1}{1+\frac{1}{2}}$

  $\frac{x+y}{2}$,   $\frac{1}{1+\frac{1}{2}}$

根式

$\sqrt{2}<\sqrt[3]{27}$, $\sqrt{1+\sqrt[p]{1+a^2}}$

  $\sqrt{2}<\sqrt[3]{27}$,   $\sqrt{1+\sqrt[p]{1+a^2}}$

积分和求和

$\sum_{k=1}^{n}\frac{1}{k}$, $\int_a^b f(x)dx$

  $\sum_{k=1}^{n}\frac{1}{k}$,   $\int_a^b f(x)dx$

常用希腊字母

$$\begin{array}{|c|c|c|c|c|c|c|c|} \hline {\alpha} & {\backslash alpha} & {\theta} & {\backslash theta} & {o} & {o} & {\upsilon} & {\backslash upsilon} \\\\ \hline {\beta} & {\backslash beta} & {\vartheta} & {\backslash vartheta} & {\pi} & {\backslash pi} & {\phi} & {\backslash phi} \\\\ \hline {\gamma} & {\backslash gamma} & {\iota} & {\backslash iota} & {\varpi} & {\backslash varpi} & {\varphi} & {\backslash varphi} \\\\ \hline {\delta} & {\backslash delta} & {\kappa} & {\backslash kappa} & {\rho} & {\backslash rho} & {\chi} & {\backslash chi} \\\\ \hline {\epsilon} & {\backslash epsilon} & {\lambda} & {\backslash lambda} & {\varrho} & {\backslash varrho} & {\psi} & {\backslash psi} \\\\ \hline {\varepsilon} & {\backslash varepsilon} & {\mu} & {\backslash mu} & {\sigma} & {\backslash sigma} & {\omega} & {\backslash omega} \\\\ \hline {\zeta} & {\backslash zeta} & {\nu} & {\backslash nu} & {\varsigma} & {\backslash varsigma} & {} & {} \\\\ \hline {\eta} & {\backslash eta} & {\xi} & {\backslash xi} & {\tau} & {\backslash tau} & {} & {} \\\\ \hline {\Gamma} & {\backslash Gamma} & {\Lambda} & {\backslash Lambda} & {\Sigma} & {\backslash Sigma} & {\Psi} & {\backslash Psi} \\\\ \hline {\Delta} & {\backslash Delta} & {\Xi} & {\backslash Xi} & {\Upsilon} & {\backslash Upsilon} & {\Omega} & {\backslash Omega} \\\\ \hline {\Omega} & {\backslash Omega} & {\Pi} & {\backslash Pi} & {\Phi} & {\backslash Phi} & {} & {} \\\\ \hline \end{array}$$