1.1 problem Example, page 25
  1.2 problem Example, page 27
  1.3 problem Example, page 28
  1.4 problem Example, page 30
  1.5 problem Example, page 33
  1.6 problem Example, page 36
  1.7 problem Example, page 38
  1.8 problem example page 46
  1.9 problem example page 47
  1.10 problem Example, page 49