Math+Website

Here is a list of helpful math websites. math \tilde{f}(\omega)=\int_{-\infty}^{\infty} f(t) e^{-i\omega t}\,dt math

math \frac{x+y}{x-y} \frac{\frac{1}{x}+\frac{1}{y}}{x-y} math

math \(a + a = 2a\) math

math \[\frac{4}{3}\pi r^2\] math