# Necessary and sufficient conditions for oscillation of first order neutral delay difference equations

## DOI:

https://doi.org/10.14419/gjma.v3i2.4560## Published:

2015-04-25## Keywords:

Oscillatory behavior, Neutral, Delay difference equation, Constant coefficients.## Abstract

In this paper, we obtained some necessary and sufficient conditions for oscillation of all the solutions of the first order neutral delay difference equation with constant coefficients of the form

\begin{equation*} \quad \quad \quad \quad \Delta[x(n)-px(n-\tau)]+qx(n-\sigma)=0, \quad \quad n\geq n_0 \quad \quad \quad \quad \quad \quad {(*)} \end{equation*}

by constructing several suitable auxiliary functions. Some examples are also given to illustrate our results.

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