Answer
$e^{-4(t-3)}u_3(t)$
Work Step by Step
We are given that $F(s)=\frac{e^{-3s}}{s+4}$
Now,$f(t)= L^{-1}[\frac{e^{-3s}}{s+4}]\\
=e^{-4(t-3)}u_3(t)$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.