1College of Mathematical and Computational Science Zhongshan University, Guangzhou 510275, Guangdong, P.R. China
2Department of Mathematics, Qufu Normal University Qufu 273165, Shandong, P.R. China
Abstract:
Using the integral average method, we establish some oscillation criteria of Kamenev type and Yan type for the nonlinear system of differential equation
where the functions bi(t) (i = 1, 2) are nonnegative and summable on each finite segment of the interval Z0, ∞), λi > 0 (i = 1,2) with λ1 λ2 = 1.