An approximate, direct variational method, simple in concept, and straightforward in application is presented to deal with the problem of forced oscillation of nonlinear systems. The general procedure is illustrated in detail by treating a particular example, i.e., the Duffing’s equation. The same procedure is also applied to some other examples in mathematical physics.

Topics
Nonlinear systems, Mathematical physics, Variational methods
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© 1975 American Institute of Physics.
1975
American Institute of Physics
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