Answer:
X=20
Step-by-step explanation:
6a. By the convolution theorem,

6b. Similarly,

7. Take the Laplace transform of both sides, noting that the integral is the convolution of
and
.


where
. Then
, and

We have the partial fraction decomposition,

Then we can easily compute the inverse transform to solve for f(t) :


Answer:
there are four significant figures
Step-by-step explanation:
zeros to the right of a non zero digit are ambiguous
I think it's 50%, tell me if my answer was right please