Hi guys, can someone tell me how I can get a numerical answer to the following question:

>with(inttrans):

>invlaplace (15/(s³ + 6s² + 15s + 15), s, t)

The answer I receive from entering the above commands is not the numerical answer. I know that the answer should contain sines/cosines/exponentials - how do I get that?

thx

Hi guys, I'm trying to solve the following function:

>with(inttrans):

>invlaplace (15/(s³ + 6s² + 15s + 15), s, t)

but I'm not getting a viable answer - can maple answer this?

I've also simplified the above function a bit to: H(s) = 15/[(s + 2.3222)(s² + 3.6778s + 6.4594)] and then tried to find it's inverse laplace but still don't get an answer.