在MarkdownPad 2中自定义头文件，点击"工具> 选项 > 高级 > HTML Head 编辑器"。添加下列内容：
<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
</script>
调试代码如下：
When \\( a \ne 0 \\), there are two solutions to \\(ax^2 + bx + c = 0\\) and they are:
$$ x = {-b \pm \sqrt{b^2-4ac} \over 2a} $$
$$
\begin{aligned}
\dot{x} & = \sigma(y-x) \\
\dot{y} & = \rho x - y - xz \\
\dot{z} & = -\beta z + xy
\end{aligned}
$$
按F6查看结果如下：
