Chapt. 4, sec. 4.7, p. 192; problems: #37, 51, 58 Chapt. 4, sec. 4.5, p. 177; problems: #15, 17, 36, 44, 48 Chapt. 4, sec. 4.6, p. 181; problems: #21, 28
Chapt. 4, sec. 4.7.4, p. 233; problems: #37, 51, 58 Chapt. 4, sec. 4.5.1, p. 215; problems: #15, 17, 36, 44, 48 Chapt. 4, sec. 4.6.1, p. 221; problems: #21, 28