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)