1. The problem statement, all variables and given/known data I'm given a transfer function C(s)=10R(s)/(s+4) And I have to find c(t) for r(t)=6u(t) 3. The attempt at a solution First I did this problem by taking inverse laplace of the transfer function, and inserting the value of r(t) in it. Next I did the same problem by first taking laplace of r(t), inserting it in the transfer function equation and then taking the inverse laplace to get c(t). The answers I got from the two approaches don't match. I got c(t)=60e-4t by the first method and c(t)=15(1-e-4t) by the second method. I don't understand why they don't match. I know that the second approach is giving me the right answer, but I can't figure out what's wrong with the former approach? Thank you for your time!