Integral( sin(x) exp(x) dx)
Integral( sin(x) exp(x) dx) = (1/2) (sin(x) - cos(x)) exp(x) Proof: Let y = (1/2) (sin(x) - cos(x)) exp(x) then y' = (1/2) (sin(x) - cos(x) exp(x) + (1/2) (cos(x) + sin(x) exp(x) = (1/2) (2 sin(x) ) exp(x) = sin(x) exp(x). Sign in to see full entry.