On oscillation of neutral second order differential equations

نویسندگان

  • M. M. A. El - sheikh
  • R. Sallam
  • N. Mohamady
چکیده

Oscillation criteria for second order nonlinear neutral differential equations. 1 M.M.A.El-sheikh, 2 R.Sallam and 3 N.Mohamady 1Department of Mathematics , Faculty of Science, Taibah University,Madinah ,Saudi Arabia. 1,2 Department of Mathematics , Faculty of Science, Menofia University, Egypt. 3 Department of Mathematics , Faculty of Science, Benha University, Egypt. E-mail address: [email protected] Abstract In this paper we are concerned with the oscillatory behavior of solutions of two general classes of second order nonlinear neutral differential equations. The obtained results improve and extend some known criteria in the literature. Two illustrative examples are given to justify our results.

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تاریخ انتشار 2011