## Asymptotic decay of oscillatory solutions of second order differential equations with forcing term.(English)Zbl 0367.34021

### MSC:

 34C10 Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations 34K99 Functional-differential equations (including equations with delayed, advanced or state-dependent argument)
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### References:

 [1] John R. Graef and Paul W. Spikes, Continuability, boundedness and asymptotic behavior of solutions of \?$$^{\prime}$$$$^{\prime}$$+\?(\?)\?(\?)=\?(\?), Ann. Mat. Pura Appl. (4) 101 (1974), 307 – 320. · Zbl 0296.34027 [2] John R. Graef and Paul W. Spikes, Asymptotic behavior of solutions of a second order nonlinear differential equation, J. Differential Equations 17 (1975), 461 – 476. · Zbl 0298.34028 [3] L. Hatvani, On the asymptotic behaviour of the solutions of (\?(\?)\?$$^{\prime}$$)$$^{\prime}$$+\?(\?)\?(\?)=0, Publ. Math. Debrecen 19 (1972), 225 – 237 (1973). · Zbl 0271.34061 [4] J. W. Heidel, A nonoscillation theorem for a nonlinear second order differential equation, Proc. Amer. Math. Soc. 22 (1969), 485 – 488. · Zbl 0169.42203 [5] Bhagat Singh, Asymptotically vanishing oscillatory trajectories in second order retarded equations, SIAM J. Math. Anal. 7 (1976), no. 1, 37 – 44. · Zbl 0321.34058
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