摘要
将研究带有正负系数的的二阶时滞微分方程解的振动性,使用文献中的思想,得到了这类方程振动解存在的充分条件,推广和改进了文献中的相关结论,并且通过具体的例子说明所得结论的优越性.
In this article the author will study the oscillatory solutions of second-order delay differential equations with positive and negative coefficients. Using the ideas in document, get the enough conditions how the oscillatory solutions of this kind of equations exist, spread and improvethe related conclusions in document and explain the superiority of the conclusions which are made in thid article with the specific examples.
出处
《数学的实践与认识》
CSCD
北大核心
2009年第13期266-272,共7页
Mathematics in Practice and Theory
关键词
正负系数
中立型
时滞
微分方程
振动性
positive and negative coefficients
netural
delay
differential equations
oscillatory
