Chapter 18 "Second-order Differential Equations"

Textbook sections that will be covered are 18.1 to 18.3. The following are recommended exercises:

18.1: 1, 3, 5, 7, 9, 11, 13, 17, 19, 21, 23, 25, 27, 33

18.2: 1, 3, 5, 7, 9, 13, 15, 17, 19, 21, 23, 25

18.3: 1, 3, 5, 9, 11, 13, 15

The following links should give you a introduction to second-order differential equations and show you how to work with them:

http://www.sosmath.com/diffeq/diffeq.html

http://math.furman.edu/~dcs/book/c8pdf/sec84.pdf

http://calclab.math.tamu.edu/docs/math308/tutorials.html

http://www.chass.utoronto.ca/~osborne/MathTutorial/SDEF.HTM