International Journal of Mathematics and Mathematical Sciences
Volume 10 (1987), Issue 1, Pages 35-45
doi:10.1155/S0161171287000048
Oscillation theorems for second order nonlinear differential equations with deviating arguments
S.R. Grace1
and B.S. Lalli2
1Department of Mathematics, P. O. Box 1682, University of Petroleum \& Minerals, Dhahran, Saudi Arabia
2Department of Mathematics, University of Saskatchewan, Saskatoon S7N 0W0, Saskatchewan, Canada
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