16 Chapter 1, section 1.2. Riccati Equation. subsection 1.2.7-3. Equations containing arctangent.

16.1 problem 19
16.2 problem 20
16.3 problem 21
16.4 problem 22
16.5 problem 23
16.6 problem 24
16.7 problem 25
16.8 problem 26
16.9 problem 27