26.1 Chapter 2, section 7, page 37

26.1.1 problem 1.a
26.1.2 problem 1.b
26.1.3 problem 1.c
26.1.4 problem 1.d
26.1.5 problem 1.
26.1.6 problem 3.a
26.1.7 problem 3.b
26.1.8 problem 5.a
26.1.9 problem 5.b