9 Section 5.3, second order linear equations. Page 323

 9.1 problem 1
 9.2 problem 2
 9.3 problem 3
 9.4 problem 4
 9.5 problem 5
 9.6 problem 6
 9.7 problem 7
 9.8 problem 8
 9.9 problem 9
 9.10 problem 21
 9.11 problem 22
 9.12 problem 23
 9.13 problem 45
 9.14 problem 46
 9.15 problem 47
 9.16 problem 52
 9.17 problem 53