- #1
ViolentCorpse
- 190
- 1
Homework Statement
I'm given a transfer function
C(s)=10R(s)/(s+4)
And I have to find c(t) for r(t)=6u(t)
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!