We’ve just released a very powerful way for people to use mathematical formulas in their Wikispaces pages: LaTex support.
If you are familiar with LaTex, all you need to do is wrap your LaTex formula in [[math]] tags like this:
[[math]]
\tilde{f}(\omega)=\int_{-\infty}^{\infty} f(t) e^{-i\omega t}\,dt
[[math]]
That code will display this:

If you aren’t familiar with LaTex, now might be a [...]