# Inverse Laplace Transform of (1/(s+s^3))?

1. Dec 20, 2012

### rAInMo9

1. The problem statement, all variables and given/known data

What is the inverse laplace transform of (1/(s+s^3))?

2. Relevant equations

3. The attempt at a solution

I looked it up on wolframalpha and got 1-cos(t), but I don't understand how they got that answer. I looked up a basic laplace transform chart and didn't see anything that matched; also thought of using partial fractions to simplify it but that didn't work out.

2. Dec 20, 2012

### Dick

I think you should try partial fractions again. It works out pretty easily that way. Show us what you did.

Last edited: Dec 20, 2012
3. Dec 24, 2012

### rAInMo9

Haha...I just realized I did my partial fraction decomposition wrong the first time -______- So mad...Thanks for the help!