# Inverse Laplace transform

1. Mar 10, 2009

### tony873004

How do I do the inverse of this? 1/(s+a)n is not in the table.

$$\begin{array}{l} Y\left( s \right) = \frac{1}{{\left( {s + 4} \right)^4 }} \\ y\left( t \right) = L^{ - 1} \left[ {Y\left( s \right)} \right] \\ \end{array}$$
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Mar 10, 2009

### Tom Mattson

Staff Emeritus