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Oscillation criteria for forced second-order nonlinear differential equations with damping. (English) Zbl 1167.34325
The authors investigate oscillations of a class of forced second-order differential equations with nonlinear damping terms. Some new interval oscillation criteria for the equations are obtained via using a classical variational principle and an averaging technique. Also, some examples which improve and extend some known results are included.

MSC:
34C10Qualitative theory of oscillations of ODE: zeros, disconjugacy and comparison theory
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References:
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