I work as a content developer and $\LaTeX$ programmer for FLEX College Prep. Using $\LaTeX$ you can typeset your own beautiful mathematics as illustrated in the example below:

$i\hbar\frac{\partial}{\partial t}\left|\Psi(t)\right>=H\left|\Psi(t)\right>$

which is an expression of Schroedinger’s equation.

In the development of our SAT and ACT test preparation resources at FLEX, I made extensive use of $\LaTeX$ in generating the mathematics sections. Here I will explain a bit about how all that was done.