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Abstract
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International Journal of Mathematics and Mathematical Sciences
Volume 13 (1990), Issue 1, Pages 151-158
doi:10.1155/S0161171290000205

Strong oscillations for second order nonlinear functional differential equations

Jurang Yan

Department of Mathematics, Shanxi University, Shanxi, Taiyuan, China

Abstract

In this paper, we establish some strongly oscillation theorems for nonlinear second order functional differential equationx″(t)+p(t)f(x(t),x(g(t)))=0without assuming that g(t) is retarded or advanced.