摘要
给出微分方程N′(t) =r(t)N(t) 1 -N(t-τ)1 -λN(t-τ) (t≥ 0 )所有正解在t→∞时 ,趋于平衡点N =1的充分条件 ,并改进文献的相应结果 .
We consider the neutral delay differential equation \%(x(t)-P(t)x(t-τ))′+Q(t)x(t-σ)=0\%. Some sufficient conditions that guarantees every solution of the equation oscillating are obtained. The results of the literature are improved and extended.
出处
《沈阳化工学院学报》
2000年第2期134-139,共6页
Journal of Shenyang Institute of Chemical Technolgy
基金
湖南省教委高校科研基金!资助项目 (1999C12 )
关键词
中立型方程
振动
充分条件
时滞微分方程
neutral differential equation
\ oscillation
\ sufficient conditions
\ delay
