Some references I used to add Mathjax support in my notes:
Test:
Inline: $\dot{x} = Ax+Bu$
Centered: \(P(A|X) = \frac{P(X|A)P(A)}{P(X)}\)
Colored set of equations (line break not working):
\begin{align*}
\color{red}a \color{black} = 1, \
\color{blue}{b} \color{black}= 1, \
\color{red}{a} \color{black}+ \color{blue}{b} \color{black}= 2
\end{align*}