1. The problem statement, all variables and given/known data Integral, from 0 to 1, y/(e^2y) 2. Relevant equations Use integration by parts 3. The attempt at a solution I need integration by parts. The answer is 1/4-3/5e^-2. But I got 1/2 and it all makes sense to me, so tell me what I got wrong. I put u=e^2y du=2e^2y dv= 1/e^2y dy (did u substitution on 2y here) v=1/2 * ln(e^2y) (here I canceled ln and e, so left with 2y) v=1/2 * 2y = y Plugged them into integration by parts formula and got y^2-(y^2)/2. Plugged in 1 and 0. And I got 1-1/2 = 1/2. How is this wrong?? I don't understand.