Oscillation of third-order neutral differential equations

  • Authors:
  • B. BaculíKová;J. Durina

  • Affiliations:
  • Department of Mathematics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia;Department of Mathematics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia

  • Venue:
  • Mathematical and Computer Modelling: An International Journal
  • Year:
  • 2010

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Abstract

The objective of this paper is to study asymptotic properties of the couple of third-order neutral differential equations (E^+/-)[a(t)([x(t)+/-p(t)x(@d(t))]^'')^@c]^'+q(t)x^@c(@t(t))=0,t=t"0, where a(t), q(t), p(t) are positive functions, @c0 is a quotient of odd positive integers and @t(t)@?t, @d(t)@?t. We will establish some sufficient conditions which ensure that all nonoscillatory solutions of (E^+/-) converge to zero. Some examples are considered to illustrate the main results.