- Exercise 5.4 p. 145 (4 points)
- Exercise 5.11 p. 146 (4 points)
- Exercise 5.12 p. 146 (8 points)
- Exercise 5.15 p. 147 (5 points)
- Exercise 6.3 p. 170 (3 points)
- Exercise 6.5 p. 170 (8 points)
- Exercise 6.6 p. 171 (8 points)
- Exercise 6.10 p. 171 (12 points)