This paper discusses a class of second order nonlinear neutral differential equations with variable coefficients and variable d eviations.Oscillation oriteria for all solutions of the equations are established and suf...This paper discusses a class of second order nonlinear neutral differential equations with variable coefficients and variable d eviations.Oscillation oriteria for all solutions of the equations are established and sufficient conditions are also given to ensure those derivatives of all differentiable solutions of the equatiors to be oscillatory.展开更多
文摘This paper discusses a class of second order nonlinear neutral differential equations with variable coefficients and variable d eviations.Oscillation oriteria for all solutions of the equations are established and sufficient conditions are also given to ensure those derivatives of all differentiable solutions of the equatiors to be oscillatory.
