Periodic solutions of the second-order d
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Zaihong Wang
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Article
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2004
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Elsevier Science
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English
β 231 KB
In this paper, we deal with the existence of periodic solutions of the second-order di erential equations x + g(x) = p(t) with singularity near origin. By using the phase-plane analysis methods, we prove that the given equation has at least one periodic solution when g(x) exhibits semilinear conditi