International Journal of Mathematics and Mathematical Sciences
Volume 6 (1983), Issue 3, Pages 551-557
doi:10.1155/S0161171283000502

Oscillation criteria for certain nonlinear fourth order equations

Abstract

This work investigates the behavior of solutions of certain nonlinear fourth order differential equations. An example is given showing that these equations can have both oscillatory and nonoscillatory solutions simultaneously. Finally, several criteria for the existence of oscillator solutions are established.