一阶中立型泛函微分方程解的渐近性与振动性

Asymptoic Behavior and Oscillations of First Order Neutral Functional Differential Equations

本文研究具有变系数和多偏差的一阶中立型微分方程，讨论了方程的非振动解的渐近性，得到了方程振动的充分判据，其中有些是变号系数的情形．

This paper discusses first order neutral differential equations with variable coefficientsand several deviations.Asymptotic behavior of the nonoscillatory solutions of the equa-tions are discussed.Sufficient conditions are obtained for the equations to be oscillatory.Some of them are cases of oscillatory coefficients.