Oscillation and Nonoscillation for Second Order Linear Differential Equations*

New oscillation and nonoscillation theorems are obtained for the second order linear differential equation u0 qp t.us0, where p t.gCw0, `. and p t.G0. Conditions only about the integrals of p t. on every interval w2nt0 , 2nq1 t0 x ns 1, 2, . . . . for some fixed t0)0 are used in the results