Section 6.1, Problems 7b), 19

Section 6.2, Problems 15, 20, 30

Section 6.3, Problems 10, 22, 24

Section 6.4, Problems 9, 17, 20

Section 6.5, Problems 6, 14, 16

Section 6.6, Problems 11, 17b), 20

Section 6.7, Problems 8, 10, 12