# Drupal Modules

Drupal modules are pretty cool. I’ve just found a Tex filter that would allow a teacher to post mathematic formulas in text.

So this text “f(x)=\int_{-\infty}^xe^{-t^2}dt” would turn into
$$f(x)=\int_{-\infty}^xe^{-t^2}dt$$

The filter also can generate an iFrame with a graph. Here’s a sin(x) sample:
[graph]sin(x)[/graph]