The author of this question tried to use LateX markup, presumably thinking it would work in the same way that it does on Math Stack Exchange and Math Overflow.
Would it be possible to get MathJax for this site as well?
$$ \Huge Yes. $$
Our usual policy is to ask sites to demonstrate a need for evidence that they need this feature. This is the YAGNI development philosophy. Some excellent examples of how to demonstrate a need come from Space Exploration, Astronomy, and Amateur Radio. For this site, that requirement might be a little silly; obviously math educators need to use mathematics! But on the other hand, it ought to be easy to demonstrate the need. You've already got a good example as a start.
As suggested by Jon Ericson, this answer will serve to demonstrate that we have a need for MathJax. We do this by making a list of questions where MathJax is needed/useful. Please feel free to edit the following list.