Homework

4-13, 4-16, 4-19, 4-21, 4-39

5-5, 5-17, 5-18, 5-19, 5-21, 5-27

5-51, 5-54, 5-55, 5-59, 5-65, 5-75, 5-83,

6-13, 6-15, 6-19, 6-49, 6-53, 6-55, 6-61