In all of the following exercises, assume 0 < << 1. In Exercises 14.9.114.9.7, use the
Chapter 14, Problem 14.9.1(choose chapter or problem)
In all of the following exercises, assume 0 < << 1. In Exercises 14.9.114.9.7, use the method of multiple scales to obtain equations for the amplitude and phase.d2u dt2 + u = du dt (compare to approximations of exact solution)
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