What is the convolution of 2 dirac functions? I ran into a problem, which wants to find the convolution $\delta (3-t) * \delta (t-2)$ and I am stuck. How can I approach it? 

You could do it using the Laplace transform and the convolution theorem for Laplace transforms. The Laplace transform of a Dirac delta is
$$\mathcal{L}(\delta(t-a)) = e^{-as}$$
and the convolution theorem states that $\mathcal{L} ((f*g)(t)) = \mathcal{L}(f(t))\mathcal{L}(g(t))$, so you can multiply the Laplace transforms of your deltas and then take the inverse. There is likely a more direct method though.
