How to use MathJax
To use MathJax in your pages:
First, load
MathJax.js
<script src="
path-to-MathJax
/MathJax/MathJax.js"></script>
Then include mathematics in your page:
... we see that \(y = \frac{1}{x^2-1}\) when \(x \ne \pm 1). ...
or
... we see that
\[
y = \frac{1}{x^2-1} \hbox{ when $x \ne \pm 1$.}
\]
...