62.30 Chapter VIII, Linear differential equations of the second order. Article 53. Change of dependent variable. Page 125

62.30.1 problem Ex 1
62.30.2 problem Ex 2
62.30.3 problem Ex 3
62.30.4 problem Ex 4
62.30.5 problem Ex 5
62.30.6 problem Ex 6
62.30.7 problem Ex 7
62.30.8 problem Ex 8