You have answered 3 out of 4 parts correctly. a) If F(a) = dt, then F'(x) = X 5 t 15 b) If F(x) = dt, then F'(x) = X c) If F(a) = dt, then F'(x) = 19 t. '+1 c) If F(x) = dt, then F' (x) = 2+cos x