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MATHEMATICA BOHEMICA, Vol. 126, No. 3, pp. 639-647 (2001)
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# Existence of nonoscillatory solutions of a class of nonlinear difference equations with a forced term

## B. G. Zhang, Y. J. Sun

* B. G. Zhang, Y. J. Sun*, Department of Applied Mathematics, Ocean University of Qingdao, Qingdao 266003, P. R. CHINA

**Abstract:**
In this paper, necessary and sufficient conditions for the existence of nonoscillatory solutions of the forced nonlinear difference equation $$ \Delta (x_{n}-p_{n} x_{\tau (n)})+f(n,x_{\sigma (n)})=q_{n} $$ are obtained. Examples are included to illustrate the results.

**Keywords:** difference equations, nonlinear, forced term, nonoscillation

**Classification (MSC2000):** 39A10

**Full text of the article:**

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