2007•Shuxue de shijian yu renshiRequires access
Oscillatory Criterion of a Kind of Second-order Nonlinear Variable Delay Differential Equation with Variable Coefficient
Jianguo Zhang
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Abstract
This paper studies the oscillation of second-order variable delay differential equation x(t)+p(t)f(x(g(t)))=0.By using two lemmas,we gain two sufficient conditions for the oscillation of all solutions of the equation with variable coefficient p(t).We generalize the oscillation results of second-order nonlinear differential equation and variable delay differential equation with invariable coefficient.We also develop the oscillation results of second-order nonlinear variable delay differential equation with variable coefficient.