摘要
本文对某类带变号系数的高阶非线性微分方程给出了若干新的振动准则,它们改进和推广了文[1]～[3]的相应结果。
In this paper, some new oscillation criteria for some kinds of higher order nonlinear differential equations with changeable sign coefficient are established. These criteria improve and generalize the related results given in [1]～[3].
出处
《贵州科学》
1993年第1期14-18,共5页
Guizhou Science
关键词
变号系数
振动
高阶微分方程
higher order equation
coefficient with changeable sign
oscillation
