1. The problem statement, all variables and given/known data Evaluate the indefinite integral using two separate cases: ∫xcos(bx) dx 2. Relevant equations Integration by parts: ∫f(x)g'(x) dx = f(x)g(x) - ∫f'(x)g(x) 3. The attempt at a solution I solved the problem using integration by parts and u-substitution and got the answer: (cos(bx) + bx(sin(bx))) / b^2 + C But my professor says we should discuss the problem in two separate ways. What might be the other method of solving this problem? Thank you!