Linearized Oscillation of First-Order Nonlinear Neutral Delay Differential Equations1

In this paper we establish a equivalence of oscillation for the first-order nonlinear neutral delay differential equation, x t − px t − τ + m i=1 qifi x t − σi = 0 and its corresponding linear equation, x t − px t − τ + m i=1 qix t − σi = 0 under a weaker condition on fi .