几类具有正负系数的中立型泛函微分方程的振动性

摘要

In this paper, the oscillation criterion for solutions of certain classes of neutral functional differential equations with positive and negative coefficients is investigated, some new sufficient conditions for all solutions of the equations to be oscillatory have been obtained.%研究了几类具有正负系数的中立型泛函微分方程的振动性,得到了其解振动的新的充分条件.