Part 2: Multiple Choice: Choose the best answer. (1 mark each) INSTRUCTIONS: Evaluate the following integrals by using the Fundamental Theorem of Calculus and, where applicable, Change of Variables (Substitution). If you have completed the Integration in Maple lab, you can use MAPLE to check your answers. However, you will be expected to complete these types of questions on the final exam. 18. Sadr = (where a is a constant) a. 0+C b. a +C c. ar + C d. c e. None of the above 19. [ x" dx = (where n * -1) a. r" + C b. a"+ + C C. n+1 + C e. None of the above 20. [ ) dx = a. r + C b. +C c. In(x) + C d. In | z | +C e. None of the above 21. Jel dx = a. e + C b. ertl + C c. In(x) + C d. In | z | +C e. None of the above 22. Ja de = (where a is a constant with a > 0 and a # 1) a. qtti + C b. + C In(a) d. #+1 In(a+1) + C e. None of the above 23. S sin(x) dx = a. cos(x) + C b. - cos(I) + C c. sin(z) + C d. - sin(x) + C e. None of the above 24. [ cos(x) di = a. cos(x) + C b. - cos(z) + C c. sin(x) + C d. - sin(x) + C e. None of the above 25. [ sec'(x) dx = a. tan(x) + C b. - tan(x) + C c. cot(x) + C d. - cot(z) + C e. None of the above 26. fest?(x) dx = a. tan(x) + C b. - tan(x) + C c. cot() + C d. - cot(z) + C e. None of the above