As always, if you find while working these problems that you need further practice, I would suggest trying some of the other odd-numbered problems (answers to odd exercises are in the back of the book) or asking the TAs or myself questions in office hours.
Chp 14
14-32 (p. 470)
Chp 15
15-22 (p. 508); 15-24 (p. 510); 15-26 (p. 512)