a-boy's blog

1. new file _includes/math.html

   <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
   <script id="MathJax-script" async src="https://unpkg.com/mathjax@3/es5/tex-mml-chtml.js"></script>
   

2. Use in a markdown or HTML page (or layout) as:

   \{\% include math.html \%\}
   

   remove 4 \

or set mathjax: true in the _config.yml or the markdown’s front matter to enable it.

1. to test:

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

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