2 Chapter 10, Differential equations. Section 10.3, ODEs with variable Coefficients. First order. page 315

  2.1 problem 10.3.2
  2.2 problem 10.3.3
  2.3 problem 10.3.4
  2.4 problem 10.3.5
  2.5 problem 10.3.6
  2.6 problem 10.3.7
  2.7 problem 10.3.8
  2.8 problem 10.3.9 (a)
  2.9 problem 10.3.9 (b)