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

2.16.1 Problem 19
2.16.2 Problem 20
2.16.3 Problem 21
2.16.4 Problem 22
2.16.5 Problem 23
2.16.6 Problem 25
2.16.7 Problem 26