15 Chapter 1, section 1.2. Riccati Equation. subsection 1.2.7-2. Equations containing arccosine.

15.1 problem 10
15.2 problem 11
15.3 problem 12
15.4 problem 13
15.5 problem 14
15.6 problem 15
15.7 problem 16
15.8 problem 17
15.9 problem 18