62.36 Chapter IX, Miscellaneous methods for solving equations of higher order than first. Article 60. Exact equation. Integrating factor. Page 139

62.36.1 problem Ex 1
62.36.2 problem Ex 2
62.36.3 problem Ex 3
62.36.4 problem Ex 4
62.36.5 problem Ex 5
62.36.6 problem Ex 6
62.36.7 problem Ex 7
62.36.8 problem Ex 8
62.36.9 problem Ex 10