The question is read
int(0 to infinity) (e^-x)(sinx)
So i first expressed this as a limit where
limit A approaching infinity (int 0 to A)(e^-x)(sinx).
I integrated by parts twice to find that int of (e^-x)(sinx) = (e^-x (-sinx-cosx))/2
But now i am stuck on solving the limit itself. Any help is appreciated Thanks in advance