82.47 Chapter VIII. Exact differential equations, and equations of particular forms. Integration in series. problems at page 102

82.47.1 problem Ex. 1
82.47.2 problem Ex. 2
82.47.3 problem Ex. 3
82.47.4 problem Ex. 4
82.47.5 problem Ex. 5
82.47.6 problem Ex. 6