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

 9.1 problem 1
 9.2 problem 2
 9.3 problem 3
 9.4 problem 4
 9.5 problem 5
 9.6 problem 6
 9.7 problem 7
 9.8 problem 8
 9.9 problem 9
 9.10 problem 10
 9.11 problem 11
 9.12 problem 12
 9.13 problem 13