Do the following exercises from our lecture notes:

- Exercise 1.7
- Exercise 1.4
- Exercise 1.6
- Exercise 1.8
- Exercise 1.13
- Exercise 1.14
- Exercise 1.16
- Exercise 1.18
- Exercise 1.24 (b) (We did (a) in the class.)
- Exercise 1.42

The deadline is September 23. You must submit the homework on paper at the beginning of our class (in the classroom).