Oscillation results for first order neutral delay differential equations with several positive and negative coefficients

Ábel Garab, Gergő Tóth

We provide sufficient criteria for the oscillation of all solutions of neutral delay differential equations of the form \[ \left[x(t) - \sum_{i=1}^{N_r}R_i(t)x(t - r_i(t)) \right]'…