# Help with integral

by jaygatsby
Tags: integral
 P: 3 This is not a homework problem, but a problem in the textbook that is not required. I am doing this to get a handle on the topic. I am evaluating a Fourier transform, without tables, and need to evaluate this integral: $$\int e^{-t} * sin(2 \pi f_c t) * e^{-j2 \pi ft} dt$$ I have tried two methods: 1) integration by parts, and 2) integration after expressing the sine function as a complex exponentials. I get stuck in both cases. The asterisks are there to assist with clarity of spacing. Thanks for any help you can provide, J