Directions: Read comprehensively and choose the best answer and explain why you chose that specific answer by showing the complete solution sets. 1. Find the derivative of the following function: f(x) = 1963 (A) +00 (B) 1963 (C) -60 (D) O (E) None of the above 2. Find the derivative of the following function: f(x) = x 2 + 6x + 9 (A) f '(x) = 2x + 6x + 9 (B) f '(x) = x2+ 6 (C) f '(x) = 2x + 6 (D) f '(x) = 2x (E) None of the above 3. Find the derivative of the following function: f(x) = x z (A) f' (x) = - Vx (B) f' (x) = 5x4 (C) f' (x) = = Vx5 (D) f' (x) = 5x2 Vx (E) None of the above 4. Find the derivative of the following function: f(x) = 5x2(x + 47) (A) f O (x) = 15x 2+ 470x (D) fo (x) = 15x2- 470x 4 (B) f 0 (x) = 5x 2+ 470x E None of the above Efo (x) = 10x