Guys,

Today in the 9:00 recitation I made something of a fool of myself trying to solve problem 40 from 11.1, so I've written up a complete solution of that problem; it is available here: http://www.math.upenn.edu/~shonkwil/11140.pdf.

Also, there is a solution key for the first midterm available here: http://www.math.upenn.edu/~schak/midterm1.pdf

Finally, if you are enrolled in one of my Monday sections but were not in class today and want to see your exam, please come by during one of my office hours (remember, W 11-12, R 5-6 in DRL 3E3A).