18.1 problem Example 11.5.2 page 763
  18.2 problem Example 11.5.4 page 765
  18.3 problem Example 11.5.5 page 768
  18.4 problem (a)
  18.5 problem (b)
  18.6 problem (c)
  18.7 problem (d)
  18.8 problem (e)
  18.9 problem 1
  18.10 problem 2
  18.11 problem 3
  18.12 problem 4
  18.13 problem 5
  18.14 problem 6
  18.15 problem 7
  18.16 problem 8
  18.17 problem 11
  18.18 problem 12
  18.19 problem 13
  18.20 problem 14
  18.21 problem 15
  18.22 problem 16
  18.23 problem 17
  18.24 problem 18
  18.25 problem 19
  18.26 problem 20
  18.27 problem 21
  18.28 problem 22
  18.29 problem 23
  18.30 problem 24
  18.31 problem 25
  18.32 problem 26
  18.33 problem 27
  18.34 problem 28
  18.35 problem 29