HW Set 7 (assigned  Wednesday Oct 21, 2009)
Problems for quiz 7 (in discussion sections week of Oct 26)

Sec 4.1 # 3, 5, 10, 13, 14, 15, 29

Sec 4.2 # 17, 18, 19, 20, 27, 28, 29, 43, 45, 63

Sec 4.3 # 9, 13, 14, 26, 29, 33