Problem 1.22
Problem 2.9
Problem 2.10
Problem 2.13
Problem 3.2 parts (i), (iii), (iv)
Problem 3.5 parts (ii), (iv), (iv)
Problem 3.6 parts (ii) , (iv)
Problem 3.12
Problem 3.14
Problem 4.6 parts a, c, e
Problem 4.11 parts a, c, e
Problem 4.13 parts a, c, e