- #1
redundant6939
- 10
- 0
Homework Statement
[itex]x(t) = cos(3πt)[/itex]
[itex]h(t) = e-2tu(t)[/itex]
Find [itex]y(t) = x(t) * h(t) [/itex](ie convolution)
Homework Equations
Y(s) = X(s)H(s) and then take inverse laplace tranform of Y(s)
The Attempt at a Solution
[itex] L(x(t)) = [πδ(ω - 3π) + πδ(ω + 3π)] [/itex]
[itex] L(h(t)) = \frac{1}{s+2} [/itex]
Laplace Transform inverse :
[itex] y(t) = \frac{1}{2} \int \frac{e^{st}}{s+2} * δ(w-3π) [/itex] + [itex] \frac{1}{2} \int \frac{e^{st}}{s+2} * δ(w+3π)dt = \frac{1}{2} \frac {e^{3sπ} + e^{-3sπ}}{s+2} [/itex]
Im not sure about direc delta integration..
Last edited: