23.1 problem 33.3 (a)
23.2 problem 33.3 (b)
23.3 problem 33.3 (c)
23.4 problem 33.3 (d)
23.5 problem 33.3 (e)
23.6 problem 33.3 (f)
23.7 problem 33.3 (g)
23.8 problem 33.3 (h)
23.9 problem 33.3 (i)
23.10 problem 33.3 (j)
23.11 problem 33.3 (k)
23.12 problem 33.3 (L)
23.13 problem 33.5 (a)
23.14 problem 33.5 (b)
23.15 problem 33.5 (c)
23.16 problem 33.5 (d)
23.17 problem 33.5 (e)
23.18 problem 33.5 (f)
23.19 problem 33.5 (g)
23.20 problem 33.5 (h)
23.21 problem 33.5 (i)
23.22 problem 33.5 (j)
23.23 problem 33.5 (k)
23.24 problem 33.5 (L)
23.25 problem 33.9
23.26 problem 33.10
23.27 problem 33.11 (a)
23.28 problem 33.11 (b)
23.29 problem 33.11 (c)
23.30 problem 33.11 (d)
23.31 problem 33.11 (e)
23.32 problem 33.11 (f)
23.33 problem 33.11 (g)
23.34 problem 33.11 (h)