63.3 Chapter 1, First order differential equations. Section 1.2 Antiderivatives. Exercises page 19

63.3.1 problem 1
63.3.2 problem 2
63.3.3 problem 3
63.3.4 problem 4(a)
63.3.5 problem 4(b)
63.3.6 problem 4(c)
63.3.7 problem 6
63.3.8 problem 7