HW 7 
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Due: December 2, 2015
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38. page 650, 13.7.6<br>
39. page 650, 13.7.10<br>
40. page 651, 13.7.15<br>
41. page 658, 13.8.4<br>
42. page 573, 12.5.2<br>
43. page 578, 12.7.2<br>
44. page 586, 12.11.14<br>
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