The condition of nonoscillation for a second-order differential equation  

作　　者：CHENG Chong-gao LIU Chun-chao 

机构地区：[1]College of Mathematics and Information Science, Huanggang Normal University, Huangzhou 438000, Hubei, China

出　　处：《黄冈师范学院学报》2007年第6期4-7,共4页Journal of Huanggang Normal University

基　　金：the Hubei Provincial Department of Education,grant No.2004D003

摘　　要：In this paper,by proving a differential identity,we obtain a necessary and sufficient condition of nonoscillation for a second-order differential equation.We also improve the known results of nonoscillation for a second-order differential equation.In this paper, by proving a differential identity, we obtain a necessary and sufficient condition of nonoscillation for a second-order differential equation. We also improve the known results of nonoscillation for a second-order differential equation.

关 键 词：次级微分方程 微分特性 非波动性 充分必要条件 

分 类 号：O175[理学—数学]