Answers to HW #7 are now posted.
Concerning the answers to exam # 2: The text should say "Remember, there..."
Concerning exam #2, material from both chapters 10 and 11 will be included. You are encouraged to spend some time on HW #6 in advance of the exam.
Note there is an error in problem 2.29 in the text. ON the second line the right parentheses should be moved before 2/r.