Oscillation criterions
Sufficient oscillation conditions involving and for first-order differential equations with non-monotone deviating arguments and nonnegative coefficients are obtained. The results are based on the iterative application of the Grönwall inequality. Examples, numerically solved in MATLAB, are also given to illustrate the applicability and strength of the obtained conditions over known ones.
In this paper, we investigate a class of higher order neutral functional differential equations, and obtain some new oscillatory criteria of solutions.
We state and prove two oscillation results which deal with bounded solutions of a forced higher order differential equation. One proof involves the use of a nonlinear functional.
We obtain sufficient conditions for every solution of the differential equation to oscillate or to tend to zero as approaches infinity. In particular, we extend the results of Karpuz, Rath and Padhy (2008) to the case when has sub-linear growth at infinity. Our results also apply to the neutral equation when has sign changes. Both bounded and unbounded solutions are consideted here; thus some known results are expanded.
In this paper, we study the oscillatory behavior of the solutions of the delay differential equation of the form The obtained results are applied to n-th order delay differential equation with quasi-derivatives of the form