Thread: first shift theorem .

stuck on this question

determine

laplace -1 (s+3 / s^2 +16s +89 )

ans should be e^-8t cos5t - sin5t

ans i got was e^-8t cost 5t - 16/5 sin5t

sorry dont know how to write out in equation format . thanks for any help .

How did you get your answer? What were your steps?

Followed steps threw a examples book I got at uni , on my mobile atm so can't type it all out atm

Ok. Well, when you get to the point where you can type out all your steps for me, I'll be happy to take a look and see what's going on.