Oscillations of mixed neutral functional differential equations

摘要

In this paper, we establish several sufficient conditions for the oscillation of solutions of mixed neutral functional differential equations of the form dndtn(x(t) + cx(t−h) + Cx(t+H)) + qx(t−g) + Qx(t+G) =0, where c, C, g, G, h, and H are real constants, and q and Q are nonnegative real constants.