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In this paper, we study the nonoscillatory property of the second order nonlinear differential equation of advanced type: $$ (r(t)\phi(x(t))x'(t))' + p(t)f(x(g(t))) = 0. $$ We prove an existence theorem for nonoscillatory solutions and compare the oscillation of nonlinear equations.

NONOSCILLATORY PROPERTY OF SECOND ORDER NONLINEAR DIFFERENTIAL EQUATIONS OF ADVANCED TYPE