Article ID Journal Published Year Pages File Type
839481 Nonlinear Analysis: Theory, Methods & Applications 2015 16 Pages PDF
Abstract

The problem of the existence of periodic solution for the Liénard equation is investigated, and a result which improves the classical Dragilev’s theorem is presented, together with a corollary in which there are no assumptions on the function g(x)g(x), and hence on G(x)G(x), besides the standard sign condition. In the final part of the paper constructive examples with several limit cycles are provided.

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