Part 2: Multiple Choice: Choose the best answer. (1 mark each) 16. (Review) Find S a. - In | x + 3x | +C b. J In | x2 +6x | +C c. 2In | x + 3x | +C d. 2In | x2 + 6x | +C e. None of the above 17. (Review) Find f12 sin?(x) dx. a. 1-3 18 b. X-3 16 C. 1-3 24 d. 72 e. None of the above 18. (Review) Find integral So x e2x dx. a. ze2 + b. le2 - 1 C. e2 + 1 d. se2 - NIN e. None of the above 19. (Review) Consider the integral f , dx. Partial fractions must be used to determine this integral. The decom- position of the integrand is: a. I+ 2 b. 5 I+2 C. I-2 d. I-2 e. None of the above