Latex tesing

该文档主要目的是用于测试Latex语法对应前端的渲染能力，主要用于测试Hexo站点是否能正常渲染Latex。

Example1: 2 inline in one sentence.

When $a \ne 0$, there are two solutions to $(ax^2 + bx + c = 0)$ and they are $x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$
Example2: Matrix Example

$$\begin{bmatrix} 1&x&x^2\\ 1&y&y^2\\ 1&z&z^2 \end{bmatrix} \\ \begin{bmatrix} 1&x&x^2\\\\ 1&y&y^2\\\\ 1&z&z^2 \end{bmatrix} \\ vmatrix ||、Bmatrix{}、pmatrix()$$

Example3: the Conditional Formula

$$f(x)= \begin{cases} 0& \text{x=0}\\\\ 1& \text{x!=0} \end{cases}$$

Example4: Sprcial Symboy