4.3-4.4, due September 24

1. I don't really understand the proof to prove theorem 4.13. More specifically why they multiplied by 1/x.

2. I think the triangle inequality is interesting. I guess it makes sense, but I had never really thought about it before.

• How long have you spent on the homework assignments? Did lecture and the reading prepare you for them?
• I usually spend about an hour on each assignment. Usually the lecture explains pretty well how to do the problems, if not then I look in the book.
• What has contributed most to your learning in this class thus far?
• I think coming to lecture and listening and watching examples being done.
• What do you think would help you learn more effectively or make the class better for you? (This can be feedback for me, or goals for yourself.)
• I think if I tried more to understand the proofs while I was reading the textbook.