Homework #4 is due on Monday, April 8.  (The beginning of Mathematica Tutorial 5 may be helpful.)
Homework #5 is due on Monday, April 29.

Practice problems for the second exam, suggested for discussion on Monday, May 6.   
Here is a copy of a second exam from the past, provided for informational purposes only. You should not expect your exam to necessarily be similar.

Reminder: Please follow the homework guidelines when turning in your homework.

Nag: If you type up your homework assignment, I highly recommend that you use the LaTeX document preparation system.  This is the standard program used by mathematicians and other scientific researchers when they want to share their results.  While it has its own quirks and while it takes some practice to become proficient, LaTeX makes inserting mathematical formulas into your text simple to do.  Here is some information on getting started using LaTeX.  Instead of needing to install LaTeX on your computer, there are some online services that allow you to edit and save your homework in a browser.  For example, go to the WriteLaTeX homepage and click on the "Create a new paper" button.