56.9 Chapter 2, differential equations of the first order and the first degree. Article 16. Integrating factors by inspection. Page 23

56.9.1 problem Ex 1
56.9.2 problem Ex 2
56.9.3 problem Ex 3
56.9.4 problem Ex 4
56.9.5 problem Ex 5
56.9.6 problem Ex 6