Section 9.1

Exercise Set A: 2, 3, 4, 5, 6, 8, 9, 10

Section 9.2

Exercise Set B: 1,

Section 9.3

Exercise Set C: 1, 2, 4

Section 9.4

Exercise Set D: 1, 2

Section 9.5

Exercise Set E: 2, 3, 4, 5, 6