LaTeX on Blogger again

My previous post about LaTeX  on Blogger reported that the solution described there did not work anymore...
Now I found a new solution based on mathjax.

So let's try it straight away with inline math, like the great equation \(e^{-2\pi}\), and with displayed math like the following:
\[ \left [ - \frac{\hbar^2}{2 m} \frac{\partial^2}{\partial x^2} + V \right ] \Psi
= i \hbar \frac{\partial}{\partial t} \Psi \]