38.4 Chapter 2. First order differential equations. Section 2.1 Solution curves without a solution. Exercises 2.1 at page 44

38.4.1 problem 1 (a)
38.4.2 problem 1 (b)
38.4.3 problem 1 (c)
38.4.4 problem 1 (d)
38.4.5 problem 2 (a)
38.4.6 problem 2 (b)
38.4.7 problem 2 (c)
38.4.8 problem 2 (d)
38.4.9 problem 3 (a)
38.4.10 problem 3 (b)
38.4.11 problem 3 (c)
38.4.12 problem 3 (d)
38.4.13 problem 4 (a)
38.4.14 problem 4 (b)
38.4.15 problem 4 (c)
38.4.16 problem 4 (d)
38.4.17 problem 5 (a)
38.4.18 problem 5 (b)
38.4.19 problem 6 (a)
38.4.20 problem 6 (b)
38.4.21 problem 7 (a)
38.4.22 problem 7 (b)
38.4.23 problem 8 (a)
38.4.24 problem 8 (b)
38.4.25 problem 9 (a)
38.4.26 problem 9 (b)
38.4.27 problem 10 (a)
38.4.28 problem 10 (b)
38.4.29 problem 11 (a)
38.4.30 problem 11 (b)
38.4.31 problem 12 (a)
38.4.32 problem 12 (b)
38.4.33 problem 15 (a)
38.4.34 problem 15 (b)
38.4.35 problem 16
38.4.36 problem 17
38.4.37 problem 19
38.4.38 problem 20
38.4.39 problem 21
38.4.40 problem 22
38.4.41 problem 23
38.4.42 problem 24
38.4.43 problem 25
38.4.44 problem 26
38.4.45 problem 27
38.4.46 problem 28
38.4.47 problem 31
38.4.48 problem 36
38.4.49 problem 41