1. ## fourier transform convolution

show that convolution is commutative, f * g = g * f

cheers

2. Originally Posted by hugolovesmaths
show that convolution is commutative, f * g = g * f

cheers
$(f*g)(t)=\int_{-\infty}^{\infty}f(\tau)g(t-\tau) \; d\tau$

Now change variables using $u=t-\tau$.

CB