The main purpose of this book is to acquaint students with some physical systems describable by linear mathematics and to introduce them to the elegant and systematic mathematical methods available for understanding such systems. This is an important purpose, because some of the systems studied by physicists are linear, or approximately so, and because a thorough knowledge of linear systems can improve one’s insight into nonlinear systems. There has been much work on nonlinear problems in recent years, work that physicists should study, because many of the systems that they wish to understand are either slightly or seriously nonlinear. Therefore we devote this chapter and one other to introductory discussion of a few simple nonlinear systems.
KeywordsPhase Plane Nonlinear Oscillation Circular Orbit Periodic Motion Negative Resistance
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