Problems 5 and 6 on Homework 3 require calculus to complete. Which isn't fair, given that you aren't required to know calculus for the course. They have been dropped from the homework, and you will not lose any credit if you didn't finish them. Also, I have extended the deadline until Friday at 10pm.
Additionally, if you have downloaded Homework 4, download it again. A new version has been posted.
My apologies for the errors.
