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

3.1 problem 1
3.2 problem 2
3.3 problem 3
3.4 problem 4(a)
3.5 problem 4(b)
3.6 problem 4(c)
3.7 problem 6
3.8 problem 7