2 Chapter 1, section 1.3. Exercises page 22

 2.1 problem 1
 2.2 problem 2(a)
 2.3 problem 2(b)
 2.4 problem 3(a)
 2.5 problem 4(a)
 2.6 problem 4(b)
 2.7 problem 4(c)
 2.8 problem 5
 2.9 problem 6(a)
 2.10 problem 6(b)
 2.11 problem 8