Using MathJax to display Math on your page

Adding MathJax to your web pages is easy to do. If you are using a Content Management System (like Wordpress, Moodle, or Drupal) to generate your web site, there may be a plugin to add MathJax to your site already, e.g., for Wordpress or Drupal. You may need to download or activate the plugin, if one is available.

If you write your own HTML (directly or via a template/theme engine), you can include MathJax by adding this snippet to your page:

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

To use pugin you will have to use special notation. Library suggest usage of pre-defind commands to transfer common math notation into visual implementation. Command for the first example looks like this:
\[x = {-b \pm \sqrt{b^2-4ac} \over 2a}.\]
Commands should be enclosed into special tags:
$$...$$ or\[...\]

The Quadratic Formula

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

Cauchy's Integral Formula

\[ f(a) = {1}\div{2\pi i} \oint{f(z)}\div{(z-a)}dz \]

Angle Sum Formula for Cosines

\[ \cos(\Theta+\phi)=\cos(\Theta)\cos(\phi)−\sin(\Theta)\sin(\phi) \]

Gauss' Divergence Theorem

\[ \int_D ({ abla\cdot} F)dV=\int_{\partial D} F\cdot ndS \]

Standard Deviation

\[\sigma = \sqrt{ {1}\div{N} \sum_{i=1}^N (x_i -\mu)^2} \]