摘要
运用反证法讨论一类超前型泛函微分方程振动性的比较定理,并利用这个比较定理给出此类方程振动的充分性条件。
We use the reduction to absurdity to discuss an oscillation comparison theorem for a kind of first - order functional differential equation with advanced argument, and make use of the comparison theorem to give that the vi- bration of the sufficient conditions.
出处
《延安大学学报（自然科学版）》
2012年第4期18-20,共3页
Journal of Yan'an University：Natural Science Edition
关键词
超前型
泛函微分方程
比较定理
振动性
pre - kind
functional differential equation
comparison theorem
oscillation
