78.3 Chapter 2. First order equations. Section 7 (Homogeneous Equations). Problems at page 67

78.3.1 problem 1 (a)
78.3.2 problem 1 (b)
78.3.3 problem 1 (c)
78.3.4 problem 1 (d)
78.3.5 problem 1 (e)
78.3.6 problem 1 (f)
78.3.7 problem 1 (g)
78.3.8 problem 1 (h)
78.3.9 problem 1 (i)
78.3.10 problem 1 (j)
78.3.11 problem 3 (a)
78.3.12 problem 3 (b)
78.3.13 problem 5 (a)
78.3.14 problem 5 (b)
78.3.15 problem 5 (c)
78.3.16 problem 5 (d)
78.3.17 problem 5 (e)
78.3.18 problem 6 (a)
78.3.19 problem 6 (b)
78.3.20 problem 6 (c)