Use may use in-line math formula, like
Any non-polynomial mathematical function can be expressed approximately as a series sum of polynomials. The more terms we add, the closer the resultant equation is to the non-polynomial function. For instance, cos(x) can be expressed very accurately in the range -0.5 to 0.5 by the series:
However use need to use following at the top of markdown file:
<script type="text/x-mathjax-config">
MathJax.Hub.Config({
tex2jax: {
inlineMath: [ ['$','$'], ["\\(","\\)"] ],
processEscapes: true
}
});
</script>
<script type="text/javascript"
src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
</script>