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一阶中立型微分方程的振动性
Oscillation in First Order Neutral Differential Equation
【摘要】 研究变系数中立型泛函微分方程的解的振动性问题 分别获得了保证两类中立型方程的所有解振动的充分条件 ,改进了已有的部分结果 ,而且在某种程度上 ,我们的结果是不可改进的。
【Abstract】 Consider the oscillation of solutions of a firs torder neutral differential equations The sufficient condition which make every solutions of these equations oscillates are obtained Our theorems improves some known Results and are“sharp”conditions
【关键词】 中立型泛函微分方程;
振动性;
“积分小”系数;
充分条件;
【Key words】 neutral differential equation; oscillation; “integrally small”coefficient; sufficient condition;
【Key words】 neutral differential equation; oscillation; “integrally small”coefficient; sufficient condition;
- 【文献出处】 怀化师专学报 ,JOURNAL OF HUAIHUA TEACHERS COLLEGE , 编辑部邮箱 ,2000年02期
- 【分类号】O175.7
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