This was a Bonus question in my Linear Systems Analysis quiz

Find the inverse Laplace transform

f(t) = L^-1{S/(S+3)^3}

How do you perform this transformation?

 

You can do partial fractions for the special case for repeated real roots.

http://www.swarthmore.edu/NatSci/ec...tion/PartialFraction.html#Repeated_Real_Roots.