This handout is designed to give a few examples to explain how to do problem 5 of Homework 3. I hope it helps clear things up for you. As always, of course, if you find that you are confused after reading this handout and the homework, please talk with me after class, come to my office hours, or send me e-mail. My office hours are Mondays and Wednesdays, 2:10-3:30 pm, in 1539 Galbraith Hall, and my e-mail address is ganderson@ucsd.edu.