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Im having a little (a lot) of trouble with some inverse Laplace problems.

If anyone can help, I would really appreciate it!!!

1. 10s/(s^2+256)^2

2. 6s+6/(s+14)(s^2+4)

With 1. I have tried countless ways of rearranging etc. getting (s^2+16^2)^2 to try to work it out that way...

Im thinking it should either fit with either

sin(wt)-atcos(wt)

OR

sin(wt)+at cos (wt)

but I cant get the a and w right! :(

with 2.

I know that it needs to be expanded using partial fractions (A+Bs+C)

But I cant work out what the numerator is meant to me

I think the deniminator is s+7, (s+7)^2, (s+7)^3, (s+7)^4

And that I can bring that out as a constant and have e^-7t before those terms, but once again, Help!!

Thanks again!!

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# Homework Help: LaPlace Probs!

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