29.7 Chapter 8, Ordinary differential equations. Section 7. Other second-Order equations. page 435

29.7.1 problem 1 (a)
29.7.2 problem 1 (b)
29.7.3 problem 1 (c)
29.7.4 problem 1 (d)
29.7.5 problem 2
29.7.6 problem 3
29.7.7 problem 4
29.7.8 problem 5
29.7.9 problem 6
29.7.10 problem 16 (a)
29.7.11 problem 16 (b)
29.7.12 problem 16 (c)
29.7.13 problem 16 (d)
29.7.14 problem 17
29.7.15 problem 18
29.7.16 problem 19
29.7.17 problem 20
29.7.18 problem 21
29.7.19 problem 22
29.7.20 problem 25
29.7.21 problem 26
29.7.22 problem 27
29.7.23 problem 28
29.7.24 problem 29
29.7.25 problem 30