Advances in Difference Equations 
Volume 2006 (2006), Article ID 62579, 16 pages
doi:10.1155/ADE/2006/62579

Oscillation criteria for first-order forced nonlinear difference equations

Ravi P. Agarwal,1 Said R. Grace,2 and Tim Smith1

 1Department of Mathematical Sciences, Florida Institute of Technology, Melbourne 32901, FL, USA
2Department of Engineering Mathematics, Faculty of Engineering, Cairo University, Orman, Giza 12221, Egypt
Received 11 August 2005; Revised 20 March 2006; Accepted 25 April 2006

Abstract

Some new criteria for the oscillation of first-order forced nonlinear difference equations of the form Δx(n)+q1(n)xμ(n+1)=q2(n)xλ(n+1)+e(n), where λ, μ are the ratios of positive odd integers 0<μ<1 and λ>1, are established.