IJPAM: Volume 54, No. 4 (2009)
OSCILLATORY BEHAVIOR OF THE SOLUTIONS OF
NONLINEAR
-TH ORDER DIFFERENTIAL EQUATIONS
WITH FORCING TERM AND RETARDED ARGUMENTS
DEPENDING ON THE UNKNOWN FUNCTION
NONLINEAR

WITH FORCING TERM AND RETARDED ARGUMENTS
DEPENDING ON THE UNKNOWN FUNCTION
N.T. Markova
, P.S. Simeonov
Department of Mathematics, Physics and Chemistry
Technical University - Sliven
Sliven, 8800, BULGARIA
Faculty of Pharmacy
Medical University of Sofia
2, Dunav Str., Sofia, 1000, BULGARIA
e-mail: simeonov@pharmfac.net



Technical University - Sliven
Sliven, 8800, BULGARIA

Medical University of Sofia
2, Dunav Str., Sofia, 1000, BULGARIA
e-mail: simeonov@pharmfac.net
Abstract.In this paper the -th order differential equation

is concidered, where




Some problems of the asymptotic and oscillatory behavior of the solutions of equation () are investigated.
Received: October 14, 2008
AMS Subject Classification: 34K15
Key Words and Phrases: asymptotic and oscillatory behavior, -th order forced differential equations, retarded arguments depending on the unknown function
Source: International Journal of Pure and Applied Mathematics
ISSN: 1311-8080
Year: 2009
Volume: 54
Issue: 4