61.9 Chapter 1, section 1.2. Riccati Equation. subsection 1.2.6-1. Equations with sine

61.9.1 problem 1
61.9.2 problem 2
61.9.3 problem 3
61.9.4 problem 4
61.9.5 problem 5
61.9.6 problem 6
61.9.7 problem 7
61.9.8 problem 8
61.9.9 problem 9
61.9.10 problem 10
61.9.11 problem 11
61.9.12 problem 12
61.9.13 problem 13