Oscillation Theorems for Second-Order Damped Nonlinear Differential Equations

We present new oscillation criteria for the differential equation of the form [𝑟(𝑡)𝑈(𝑡)]+𝑝(𝑡)𝑘2(𝑥(𝑡),𝑥(𝑡))|𝑥(𝑡)|𝜈𝑈(𝑡)+𝑞(𝑡)𝜙(𝑥(𝑔1(𝑡)),𝑥(𝑔2(𝑡)))𝑓(𝑥(𝑡))=0, where 𝑈(𝑡)=𝑘1(𝑥(𝑡),𝑥(𝑡))|𝑥(𝑡)|𝛼−1𝑥(𝑡), 𝛼≤𝛽,𝜈=(𝛽−𝛼)/(𝛼+1). Our research is different from most known ones in the sense that H function is not...

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Bibliographic Details
Main Authors: Hui-Zeng Qin, Yongsheng Ren
Format: Article
Language:English
Published: Hindawi Limited 2009-01-01
Series:International Journal of Differential Equations
Online Access:http://dx.doi.org/10.1155/2009/714357

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