MathJax test
InlineMath $x_{1}, \dots x_{n}$
DisplayMath need to be wrapped by <div>
$$
\sum_{n=1}^{\infty} \frac{1}{n^{2}} = \frac{\pi^{2}}{6}
$$
\begin{equation} \label{eq:sample} e^{\pi i} + 1 = 0 \end{equation}
You can refer numbered equation like Eq. \eqref{eq:sample}.
Refer some page