Past exam of the mathematics course of the University of Cambridge / 2016 / ib / Paper 4 / 14A / b / Solution

Write $F(p)=\mathcal{L}[f](p)$. Assume $f$ and $f^{\prime }$ have right limits at zero and sufficient regularity and exponential-order bounds for the following integration by parts; take $\mathrm{Re}p$ large enough to kill the boundary terms at infinity. First,Apply the same calculation to $f^{\prime }$:This is the Laplace transform of a derivative formula with both initial-data terms retained.