The following may be helpful for getting started with the homework problems for chapter 15.  I don't know how the "Blog" feature will eventually work or even if it will be useful but I would like to make it possible for anyone in the class to submit comments or questions and I can give answers as needed.  Hopefully, there will be a running dialog which will benefit everyone.  Please do not hesitate to offer suggestions for anything else I can do to help.  If someone cares to post a comment or question we can see how things might work.

The above is actually problem 15.15