Oscillation of Second-order Delay Differential Equation  

作　　者：YINFu-qi LIYong-kun 

机构地区：[1]DepartmentofMathematics,YunnanUniversity,Kunming650091,China [2]DepartmentofMathematics,YunnanUniversity,Kunming650091,China

出　　处：《Chinese Quarterly Journal of Mathematics》2004年第1期30-34,共5页数学季刊（英文版）

基　　金：Supported by the National Natural Science Foundation of China(10061004); Supported by the Natural Sciences Foundation of Yunnan province(2003A0001M)

摘　　要：By using some differential inequality, a second-order delay differential equation(r(t)x′(t))′ + p(t)x(q(t)) = 0has been investigated and some necessary condition for this equation has a nonoscillatorysolution and some sufficient condition which ensures that all of the solutions of the aboveequation are oscillatory are obtained.

关 键 词：differential equation DELAY OSCILLATION differential inequality 

分 类 号：O175.13[理学—数学]