Math -- MathJax LaTeX

MathJax Syntax

To add an inline equation wrap your equation in $ tags.
Stand-alone equations should be wrapped in double $$ tags. To have equations numbered use \begin{equation} ... \end{equation}, without $ tags.

Inline equation:
$ x^2 $

How it shows:
$x^2$

Stand-alone equation:
$$ x^2 $$

How it shows:
$$x^2$$

A peculiarity to keep in mind. Use
$1\lt 2$ or $1< 2$ (notice space after "<" sign to avoid being interpreted as HTML tag) to produce

$1\lt 2$

Numbered equation:

In equation \eqref{eq:sample}, we find the value of an
interesting integral:

\begin{equation}
  	\int_0^\infty \frac{x^3}{e^x-1}\,dx = \frac{\pi^4}{15}
  	\label{eq:sample}
	\end{equation}

How it shows:

In equation $\eqref{eq:sample}$, we find the value of an
interesting integral:

$$\begin{equation} \int_0^\infty \frac{x^3}{e^x-1}\,dx = \frac{\pi^4}{15} \label{eq:sample} \end{equation}$$

example of LaTeX table:
$$\begin{array}{c|lcr} n & \text{Left} & \text{Center} & \text{Right} \\ \hline 1 & 0.24 & 1 & 125 \\ 2 & -1 & 189 & -8 \\ 3 & -20 & 2000 & 1+10i \\ \end{array}$$

and another one:

$$% outer vertical array of arrays \begin{array}{c} % inner horizontal array of arrays \begin{array}{cc} % inner array of minimum values \begin{array}{c|cccc} \text{min} & 0 & 1 & 2 & 3\\ \hline 0 & 0 & 0 & 0 & 0\\ 1 & 0 & 1 & 1 & 1\\ 2 & 0 & 1 & 2 & 2\\ 3 & 0 & 1 & 2 & 3 \end{array} & % inner array of maximum values \begin{array}{c|cccc} \text{max}&0&1&2&3\\ \hline 0 & 0 & 1 & 2 & 3\\ 1 & 1 & 1 & 2 & 3\\ 2 & 2 & 2 & 2 & 3\\ 3 & 3 & 3 & 3 & 3 \end{array} \end{array} \\ % inner array of delta values \begin{array}{c|cccc} \Delta&0&1&2&3\\ \hline 0 & 0 & 1 & 2 & 3\\ 1 & 1 & 0 & 1 & 2\\ 2 & 2 & 1 & 0 & 1\\ 3 & 3 & 2 & 1 & 0 \end{array} \end{array}$$

Please follow this link to see more examples of equation syntax.
For the full list of capabilities, including equation numbering, defining macros see MathJax documentation .