7 Problem 1.2-2, page 12

 7.1 problem 1.2-2 (a)
 7.2 problem 1.2-2 (b)
 7.3 problem 1.2-2 (c)
 7.4 problem 1.2-2 (d)
 7.5 problem 1.2-2 (e)
 7.6 problem 1.2-2 (f)