There is a [MATH] tag available. Basically, it takes its contents to be a LaTeX expression, and draws the resulting LaTeX-rendered image in its place.

Example:

Who doesn't love some ?

See here for the further details/documentation: Math BBCode

Consider: Experimenting/Drafting LaTeX Expressions

As documented on the wiki page, here is a site where you can interactively play with LaTeX expressions to get the hang of things, or to draft them before posting them here:

http://www.codecogs.com/latex/eqneditor.php

...

See here to see/provide feedback on this feature: http://forums.intpcomplex.com/showth...th-Expressions