3.1 problem 23 (a)
3.2 problem 23 (d)
3.3 problem 23 (e)
3.4 problem 23 (h)
3.5 problem 23 (i)
3.6 problem 23 (j)
3.7 problem 23 (k)
3.8 problem 23 (m)
3.9 problem 23 (o)
3.10 problem 23 (p)
3.11 problem 24 (p)
3.12 problem 24 (c)
3.13 problem 24 (d)
3.14 problem 24 (g)
3.15 problem 24 (L)
3.16 problem 25 (a)
3.17 problem 25 (b)
3.18 problem 25 (c)
3.19 problem 25 (d)
3.20 problem 25 (e)
3.21 problem 25 (f)
3.22 problem 25 (g)
3.23 problem 25 (h)
3.24 problem 25 (L)
3.25 problem 25 (j)
3.26 problem 25 (k)
3.27 problem 26 (a)
3.28 problem 26 (b)
3.29 problem 26 (c)
3.30 problem 26 (d)
3.31 problem 26 (e)
3.32 problem 26 (f)
3.33 problem 26 (g)
3.34 problem 26 (h)
3.35 problem 26 (i)
3.36 problem 27