Periodic Solutions for Nonlinearnth Orde
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Zhaoli Liu
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Article
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1996
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Elsevier Science
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English
โ 193 KB
Existence of -periodic solutions of nth order ordinary differential equations ลฝ . with nonlinear restoring term h x and time-variable coefficients is studied without ลฝ . ลฝ . the assumption of boundedness of h x and hะ x .