9.1 problem 1(a)
9.2 problem 1(b)
9.3 problem 1(c)
9.4 problem 1(d)
9.5 problem 1(e)
9.6 problem 1(f)
9.7 problem 1(g)
9.8 problem 1(h)
9.9 problem 1(i)
9.10 problem 1(j)
9.11 problem 1(k)
9.12 problem 1(l)
9.13 problem 1(m)
9.14 problem 1(n)
9.15 problem 1(o)
9.16 problem 1(p)
9.17 problem 1(q)
9.18 problem 1(r)
9.19 problem 2(a)
9.20 problem 2(b)
9.21 problem 2(c)
9.22 problem 2(d)
9.23 problem 2(e)
9.24 problem 2(f)
9.25 problem 5(a)
9.26 problem 5(b)
9.27 problem 5(c)
9.28 problem 5(d)
9.29 problem 5(e)
9.30 problem 5(f)
9.31 problem 5(g)
9.32 problem 5(h)
9.33 problem 5(i)