数学季刊(英文版)
數學季刊(英文版)
수학계간(영문판)
CHINESE QUARTERLY JOURANL OF AMTHEMTICS
2004年
1期
30-34
,共5页
differential equation%delay%oscillation%differential inequality
By using some differential inequality,a second-order delay differential equation (r(t)x'(t))'+p(t)x(q(t))=0 has been investigated and some necessary condition for this equation has a nonoscillatory solution and some sufficient condition which ensures that all of the solutions of the above equation are oscillatory are obtained.
