74.19 Chapter 5. Applications of Higher Order Equations. Exercises 5.1, page 232

74.19.1 problem 1
74.19.2 problem 2
74.19.3 problem 3
74.19.4 problem 4
74.19.5 problem 5
74.19.6 problem 6
74.19.7 problem 7
74.19.8 problem 8
74.19.9 problem 9
74.19.10 problem 10