New Results on the Nonoscillation of Solutions of Some Nonlinear Differential Equations of Third Order
نویسندگان
چکیده
We give sufficient conditions so that all solutions of differential equations r t y′′ t ′ q t k y′ t p t y g t f t , t ≥ t0, and r t y′′ t ′ q t k y′ t p t h y g t f t , t ≥ t0, are nonoscillatory. Depending on these criteria, some results which exist in the relevant literature are generalized. Furthermore, the conditions given for the functions k and h lead to studying more general differential equations.
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تاریخ انتشار 2009