Oscillation criteria for certain fourth order nonlinear functional differential equations

نویسندگان

  • Ravi P. Agarwal
  • Said R. Grace
  • Jelena V. Manojlovic
چکیده

Some new criteria for the oscillation of the fourth order functional differential equation d dt ( 1 a3(t) ( d dt 1 a2(t) ( d dt 1 a1(t) ( d dt x(t) )α1)α2)α3) + δq(t) f (x[g(t)]) = 0, where δ = ±1 are established. c © 2006 Elsevier Ltd. All rights reserved.

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عنوان ژورنال:
  • Mathematical and Computer Modelling

دوره 44  شماره 

صفحات  -

تاریخ انتشار 2006