2.9 Section 5.3, second order linear equations. Page 323

2.9.1 problem 1
2.9.2 problem 2
2.9.3 problem 3
2.9.4 problem 4
2.9.5 problem 5
2.9.6 problem 6
2.9.7 problem 7
2.9.8 problem 8
2.9.9 problem 9
2.9.10 problem 21
2.9.11 problem 22
2.9.12 problem 23
2.9.13 problem 45
2.9.14 problem 46
2.9.15 problem 47
2.9.16 problem 52
2.9.17 problem 53