(1 point) Let f'(x) = 12cos x-5 sin x ƒ'(4) = 0.53 f(x) = 12 sin x + 5 cos x Results for this submission Entered -(x^6)*sin(x)+5*(x^6)*cos(x) The answer above is NOT correct. (1 point) Find the derivative of f(x) = x cos x f'(x) = -x^6 sin x + 5x^6 cos x Answer Preview -x sin(x) + 5x cos(x) Result incorrect (1 point) Differentiate f'(x) = f(x) = 7e* sin x. (1 point) (a) Let f(x) = sin(x). Find f'(x). f'(x) = (b) Let f(x) = sin(x³). Find f'(x). f'(x) =