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| 二阶非线性中立型微分方程的振动性 | |
| 摘 要： | This paper discusses a class of second order nonlinear neutral differential equations with variable coefficients and variable d eviations.Oscillation oriteria for all solutions of the equations are established and sufficient conditions are also given to ensure those derivatives of all differentiable solutions of the equatiors to be oscillatory. |
| 关 键 词： | 二阶非线性中立型微分方程 振动性 |
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