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| 2π-periodic Solution for a Kind High Order Delay Duffing Equation | |
| 作者姓名： | LIN Wen-xian |
| 作者单位： | College of Mathematics and Information Technology，Hanshan Teachers College，Chaozhou 521041，China |
| 摘 要： | In this paper, the high order delay Duffing equation ax(2n) bx g(x(t-τ)) =p(t) are considered,using the theory of coincidence degree, the sufficient condition for its there being at least a 2π-periodic solution is obtained. |
| 关 键 词： | Duffing方程 周期解 相合度 充分条件 |
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