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| A NECESSARY AND SUFFICIENT CONDITION ON THE EXISTENCE AND UNIQUENESS OF 2π-PERIODIC SOLUTION OF DUFFING EQUATION | |
| 作者姓名： | 李伟固 |
| 作者单位： | Department of |
| 摘 要： | This paper gives a necessary and sufficient condition on the existence and uniquenessof 2π-periodic solution of Duffing equation d~2x/dt~2+g(x)=p(t) (=P(t+2π)). |
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