8.9 Section 5.3, second order linear equations. Page 323

8.9.1 problem 1
8.9.2 problem 2
8.9.3 problem 3
8.9.4 problem 4
8.9.5 problem 5
8.9.6 problem 6
8.9.7 problem 7
8.9.8 problem 8
8.9.9 problem 9
8.9.10 problem 21
8.9.11 problem 22
8.9.12 problem 23
8.9.13 problem 45
8.9.14 problem 46
8.9.15 problem 47
8.9.16 problem 52
8.9.17 problem 53