Section 26.1
Exercise Set A: 1, 2, 3, 4, 5
Section 26.2
Exercise Set B: 2, 3, 5
Section 26.3
Exercise Set C: 1, 3, 4, 7, 8
Section 26.4
Exercise Set D: 1, 2, 3, 4, 5
Section 26.5
Exercise Set E: 1, 2, 3, 4, 5, 6, 7, 8, 10, 11