# Math Help - Laplace Transformation

1. ## Laplace Transformation

Hi,

I want to find the Laplace inverse of the following function:

$1/(s^2 +2zws + w^2)$ , where z and w are constants.

I know that the result should have an exponintial part and a sin or cos, but I don't know how to factor the function to use the table.

Thanks,

2. I would probably complete the square in the denominator. What do you get for that?