72.5 Chapter 1. First-Order Differential Equations. Exercises section 1.6 page 89

72.5.1 problem 1 and 13 (i)
72.5.2 problem 1 and 13 (ii)
72.5.3 problem 1 and 13 (iii)
72.5.4 problem 1 and 13 (iv)
72.5.5 problem 2 and 14(i)
72.5.6 problem 2 and 14(ii)
72.5.7 problem 2 and 14(iii)
72.5.8 problem 2 and 14(iv)
72.5.9 problem 3 and 15(i)
72.5.10 problem 3 and 15(ii)
72.5.11 problem 3 and 15(iii)
72.5.12 problem 3 and 15(iv)
72.5.13 problem 4
72.5.14 problem 4 and 16(i)
72.5.15 problem 4 and 16(ii)
72.5.16 problem 4 and 16(iii)
72.5.17 problem 4 and 16(iv)
72.5.18 problem 5
72.5.19 problem 6
72.5.20 problem 7
72.5.21 problem 8
72.5.22 problem 9
72.5.23 problem 10
72.5.24 problem 11
72.5.25 problem 12
72.5.26 problem 22
72.5.27 problem 23
72.5.28 problem 24
72.5.29 problem 25
72.5.30 problem 26
72.5.31 problem 27
72.5.32 problem 37 (i)
72.5.33 problem 37 (ii)
72.5.34 problem 37 (iii)
72.5.35 problem 37 (iv)
72.5.36 problem 37 (v)
72.5.37 problem 37 (vi)
72.5.38 problem 37 (vii)
72.5.39 problem 37 (viii)