Shift ⌘ P
<script type="text/x-mathjax-config">MathJax.Hub.Config({tex2jax:
{inlineMath:[['$','$']]}});</script>
<script type="text/javascript"
src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?
config=TeX-AMS-MML_HTMLorMML"></script>