2.6 Chapter IV. Methods of solution: First order equations. section 33. Problems at page 91

2.6.1 Problem 1
2.6.2 Problem 2 (eq 39)
2.6.3 Problem 3 (eq 41)
2.6.4 Problem 4 (eq 50)
2.6.5 Problem 8 (eq 68)
2.6.6 Problem 8 (eq 69)
2.6.7 Problem 9 (a)
2.6.8 Problem 9 (b)
2.6.9 Problem 9 (c)
2.6.10 Problem 9 (d)
2.6.11 Problem 9 (e)
2.6.12 Problem 10 (a)
2.6.13 Problem 10 (b)
2.6.14 Problem 10 (c)