摘要
研究了具有振动系数的一阶中立型方程:ddt〔x(t)+R(t)x(t-r)〕+P(t)x(t-r)-Q(t)x(t-δ)=0非振动解的渐近性。其中R(t)振动,P,Q∈C(〔to,∞),R+),r∈(0,∞),τ,δ∈R+。
We study asymptotic behavior of nonoscillatory solutions of the first order neutral differential equation with oscillating coefficient of the form dd t x(t)+R(t)x(t-r) +P(t)x(t-r)-Q(t)x(t- δ) =0where R(t) is oscillatory,and P,Q∈C([t o,∞),R +),r∈(,∞) and r,δ∈R +.
出处
《甘肃科学学报》
1997年第2期8-11,共4页
Journal of Gansu Sciences
关键词
中立微分方程
渐近性
振动系数
neutral differential equation,asymptotic behavior, oscillating coefficient