This assignment will be worth 40 homework points. I encourage you to work in groups of two or three. Email and/or hand in one paper for the group. Make sure you give clear prose explanations, have good comments, and show vigorous testing. Do:

1. ex. 4.20 on page 391-392
2. ex. 3.27 on page 272 (yes from chapter 3)
3. ex. 4.31 on page 408
4. Review for the comprehensive final exam which is on Tuesday, May 14 from 2-5 pm in Sproul 300 one floor up from usual. It will be closed-book, closed-notes, no computer.