Exercise 0.10

Exercise 2.16

Exercise 3.1

Exercise 3.5

Exercise 3.6

Exercise 3.11

Exercise 3.12

Exercise 3.15

Exercise 5.3

Exercise 5.4

Exercise 5.9

Exercise 5.13

Exercise 6.2

Exercise 6.5

Exercise 6.7

Exercise 6.10

Exercise 6.11

Exercise 6.13

Exercise 7.8

Exercise 8.1

Exercise 8.2

Exercise 8.7

Exercise 8.8

Exercise 9.6