Mathjax公式

When $a \ne 0$, there are two solutions to (ax^2 + bx + c = 0) and they are

$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$

http://mathjax.josephjctang.com/

$ grep theme.mathjax -rl --include=\*.{ejs,js} /home/cs/oss/hexo/themes/spfk
/home/cs/oss/hexo/themes/spfk/layout/_partial/head.ejs
$ sed -i 's/theme.mathjax/page.mathjax/' /hexo/themes/spfk/layout/_partial/after-footer.ejs

<% if (page.mathjax){ %>

/hexo/public/js/MathJax.js 添加引入

<script type="text/javascript"
   src="http://mathjax.josephjctang.com/MathJax.js?config=TeX-MML-AM_HTMLorMML">
</script>

文章开头加入

title: xxxx
permalink: xxxx/
tags: xxxx
date: xxxx
mathjax: true

mathjax: true

引入目录