1 Program 24. First order differential equations. Test excercise 24. page 1067

  1.1 problem 1
  1.2 problem 2
  1.3 problem 3
  1.4 problem 4
  1.5 problem 5
  1.6 problem 6
  1.7 problem 7
  1.8 problem 8
  1.9 problem 9
  1.10 problem 10
  1.11 problem 11
  1.12 problem 12