Oscillation theorems for second order nonlinear differential equations with deviating arguments

Abstract

New oscillation criteria for the oscillatory behaviour of the differential (a(t)x·(t)) ·+p(t)x·(t)+q(t)f(x[g(t)])=0 ,( · =ddt) and (a(t)ψ(x(t))x·(t)) ·+p(t)x·(t)+q(t)f(x[g(t)])=0, are established

Keywords

• oscillation theorems
• differential equations
• non-oscillatlons.