# Product with a delta function

1. Aug 24, 2011

### atrahasis

Hi,

I was wondering about something a friend told me. He said that we can regularize this product in this form

$sgn(x)^2 \delta(x)=\frac{\delta(x)}{3}$

Any guess on how to derive it

Thanks.

2. Aug 24, 2011

### atrahasis

Ok, finally I have it.