In general, problem sets will be first posted here on Tuesdays, and due the following Tuesday in class. Solutions will be posted as soon as they are available from the TA. No late problem sets will be accepted, short of a Dean's excuse. However one (and only one) problem set grade will be dropped from your total. Homework is worth 20% of your grade.
You will be held to the Duke Community Standard for your homework solutions. It's fine-- in fact encouraged -- to collaborate with others when working on solutions, but please write down the names of your collaborators on your homework set. It is not okay to copy solutions from others; your written solutions must be in your own words. It is also not okay to look up solutions from previous years or from the web.
Homeworks will be graded by your TAs. If you have a question about the grading or solutions, please contact them.
It is okay to use Matlab, Mathematica, and similar software for doing computations. However, make sure it is clear that's what you are doing, for instance by providing printouts of source code in your solution. It is up to you to convince the grader that you have done the problem yourself, using tools appropriately, and that you didn't just write down an answer.
Pay attention to details like units and significant figures where appropriate, and please write clearly. The grader is justified in taking off points if he has to struggle to read what you have written.