27 Chapter VII, Linear differential equations with constant coefficients. Article 50. Method of undetermined coefficients. Page 107

  27.1 problem Ex 1
  27.2 problem Ex 2
  27.3 problem Ex 3
  27.4 problem Ex 4
  27.5 problem Ex 5
  27.6 problem Ex 6
  27.7 problem Ex 7
  27.8 problem Ex 8
  27.9 problem Ex 9