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Zbl 1042.34096
Sun, Yuan Gong
A note on Nasr's and Wong's papers.
(English)
[J] J. Math. Anal. Appl. 286, No. 1, 363-367 (2003). ISSN 0022-247X

Summary: In the case of oscillatory potentials, we give sufficient conditions for the oscillation of a forced nonlinear second-order differential equations with delayed argument of the form $$x^{\prime\prime}(t)+ q(t)\vert x(\tau(t)) \vert^\gamma \operatorname{sgn} x(\tau(t))= f(t)$$ in the linear ($\gamma$=1) and the superlinear ($\gamma>1$) case. See, {\it A. H. Nasr} [Proc. Am. Math. Soc. 126, 123--125 (1998; Zbl 0891.34038)] and {J. S. W. Wong} [J. Math. Anal. Appl. 231, 235--240 (1999; Zbl 0922.34029)].
MSC 2000:
*34K11 Oscillation theory of functional-differential equations

Keywords: Oscillation; Forced nonlinear equations; Delayed argument

Citations: Zbl 0891.34038; Zbl 0922.34029

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