Chapter 10, problem 1 (page 310). Chapter 10, problem 12 (page 311). Chapter 10, problem 14 (page 311). Chapter 10, problem 15 (page 311). Chapter 11, problem 2 (page 348). Chapter 11, problem 12 (page 350). Chapter 12, problem 1 (page 384). Chapter 12, problem 5 (page 384). .