# Homework Help: Prove the convolution of f and g

1. Aug 2, 2012

### abstracted6

This was the bonus question on my test, I couldn't really figure out how to begin.

2. Aug 2, 2012

### LCKurtz

Start by writing the fourier transform of$$\int_{-\infty}^{\infty}f(x-y)g(y)dy$$
It will be an integral of that, so it will be a double integral. See if you can find a change of variables that allows you to separate the integrals.