高阶中立型时滞微分方程的渐近性与振动性

Asymptotic Behavior and Oscillation of High - order Neutal Delay Differntial Equations With Variant Coefficient

得到了变系数高阶中立型时滞微分方程的渐近性和n为偶数时解振动的充分性判据。改进和推广了文献[1-4]中的结果。

We discussed the asgmptotic behaviol of the nonoseillatorg solutions when'n' is positive integer and obtain od some sufficient conditions when' n' is euen number of the oscillation of all solwtions for the high - order neutral delay diffgrential eguations with variant coeffieient and seveval retaded arguments These results futher improve some corresponding results in document[1-4].