Evaluate ( e* sin xdx a. (sin x - cos x) + C b. (cos x + sin x) + C C. -ex (- cos x + sin x) + C d. e*(cos x + sin x) + C Evaluate the integral of f arctan x dx 3. arctan x - Inv1 + x2 + c b. arctan x + 2 In(1 +x3) + c C. X arctanx - In(v1+x])+ c d. x arctan x - 2 In(1 + x3) + c