NAME: ID NO: Program: AUP 25 MAT121 - Quiz 3 (7.5%) Instruction: Answer all questions. Please show your working steps. Question 1 Differentiate the following: a) f(x) = 4x3 2x+3 (3 marks) b) f (x) = 7x5 In(3x + 1) (3 marks) c) f(x) = ex In(4 - 8x) (3 marks) Question 2 Use logarithmic Differentiation to differentiate the following function: a) y = (x2 - 3) 4(4 -2x) 6(7x+ 3)5 (5 marks) b) y = (5 + 3x2) 4(6x + 1)3(2x - 3)7 (5 marks) Question 3 4 years ago, Gabriel had RM50 in the bank. He now have RM350. If the amount of money at the end of each year increases exponentially, then how much will you have in the bank after another 5 years? (6 marks)