3. Calculate the Hessian for the function f (x, y) = x cos(y) - xsin(y). 0 / 1 point OH = 6xcos(y) -3x2 sin(y) - cos(y) -3x2 sin(y) - cos(y) xsin(y) - x cos(y) OH = 6x2 cos(y) -3x2 sin(y) - cos(x) -3x2 sin(y) - cos(y) xsin(y) - xcos(y) O -3x2 sin(y) - cos(y) = H 6cos(a) 3x-sin(y) - cos(y) xsin(y) - y'cos(x) O H = 6cos(y) -3x2 sin(y) - cos(y?)] -3x2 sin(y) - cos(y) x'sin(y) - x cos(y)] X Incorrect