摘要
本文研究一类具有正负系数的高阶非线性中立型微分方程，讨论了它的非振动解的渐近性．
The higher - order nodrinear neutral cliIferential eqUaions with peihve and negative callcients are studied. Asymptotic behavior of nonaseillatory solutions of the equations is discussed.
关键词
中立型方程
非振动解
渐近性
微分方程
neutral equation, nonoscillatory solution, asymptotic behavior
