Math Test

The following two examples are from here https://meta.wikimedia.org/wiki/Help:Displaying_a_formula:

(search for “Case distinctions” on the page to find this example)

\[f(n) = \begin{cases} n/2, & \mbox{if }n\mbox{ is even} \\ 3n+1, & \mbox{if }n\mbox{ is odd} \end{cases}\](search for “Multiline equations” on the page to find this example)

Note- currently all forms of multiline equations appear to fail.

\[\begin{align} f(x) & = (a+b)^2 \\ & = a^2+2ab+b^2 \\ \end{align}\]