# Compute Laplace Transform

1. Apr 27, 2010

### invisible_man

Compute

L[(t-3)u2(t) - (t-2)u3(t)]

I come up with using unit step function but I don't know how to solve it

2. Apr 27, 2010

### w3390

Use the fact that anything of the form f(t-a)u(t-a) has a Laplace transform of the form e^-as*F(s)