1. The problem statement, all variables and given/known data Determine the Laplace Transform of ∫(from 0 to t) (t-τ)cos(2(t-τ))e-4τ dτ using Laplace Transform tables. 2. Relevant equations I know the basic convolution theorem is (f*g)(t) = ∫f(τ)g(t-τ)dτ 3. The attempt at a solution I'm not sure if this is double convolution or if I'm missing an easy substitution.