48.2 Chapter 3. Ordinary Differential Equations. Section 3.3 SECOND ORDER ODE. Page 147

48.2.1 problem Example 3.17
48.2.2 problem Example 3.18
48.2.3 problem Example 3.19
48.2.4 problem Example 3.21
48.2.5 problem Example 3.22
48.2.6 problem Example 3.23
48.2.7 problem Example 3.24
48.2.8 problem Example 3.26