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Some remarks on a recent third order nonlinear oscillation result. (English) Zbl 0578.34019

Summary: The author gives a counterexample disproving a result of B. Mehri [ibid. 101, 124-129 (1976; Zbl 0329.34028)] concerning oscillatory properties of solutions of the equation \(x\prime''+f(t,x)=0\) and formulates and proves a correct result.

MSC:

34C15 Nonlinear oscillations and coupled oscillators for ordinary differential equations

Citations:

Zbl 0329.34028
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