MathLive Customization Example

f(x)=
1 + \frac{q^2}{(1-q)}+\frac{q^6}{(1-q)(1-q^2)}+\cdots = \prod_{j=0}^{\infty}\frac{1}{(1-q^{5j+2})(1-q^{5j+3})}, \quad\quad \text{for $|q|<1$}
\frac{1}{4\pi t}e^{-\frac{x^2+y^2}{4t}}