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

32.1.1 problem 1
32.1.2 problem 2
32.1.3 problem 3
32.1.4 problem 4
32.1.5 problem 5
32.1.6 problem 6
32.1.7 problem 7
32.1.8 problem 8
32.1.9 problem 9
32.1.10 problem 10
32.1.11 problem 11
32.1.12 problem 12