Chapt. 7, sec.7.1, p. 333 problems: #5, #9, #13, #16, #18, #20, #30, #32, #34, #36
Chapt. 7, sec.7.1, p. 406 problems: #5, #9, #13, #16, #18, #20, #30, #32, #34, #36