Oscillation Criteria of Solution for a Class of Third Order Nonlinear Differential Equations
In order to develop and improve the theory about the oscillation criteria of solution of nonlinear dif-ferential equations,this paper is concerned with oscillation criteria of solution and asymptotic behavior of so-lutions for a class of third order nonlinear delay differential equations.By using real analysis,Riccati transfor-mation and inequality techniques,some new sufficient conditions for all solutions to be oscillatory or asymp-totically convergent to zero have been obtained,the size of the value when the equation has a positive solu-tion is estimated.The result improves and extends some known results.An example is given to illustrate the result.
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