摘要
证明了几个比较原理 ,使方程 x″+f (x) x′+g(x) =0的周期解的存在性与解的有界性定理可以分别用来判定方程 x″+h(x,x′) x′+g(x) =0的周期解的存在性与解的有界性 .
In this paper, some comparison principles are given so that the existence of periondic solutions and the boundedness of solutions to the equationx″+h(x,x′)x′+g(x)=0can be obtained by means of the existence of periondic solutions and the boundedness of solutions to the equation x″+f(x)x′+g(x)=0.
出处
《数学的实践与认识》
CSCD
北大核心
2001年第4期504-507,共4页
Mathematics in Practice and Theory
