Kroopnick, Allan J. Two new proofs for the boundedness of solutions to \(x^{\prime\prime}+a(t)x = 0\). (English) Zbl 1271.34038 Missouri J. Math. Sci. 25, No. 1, 103-105 (2013). Summary: Two theorems are presented concerning the well-known linear differential equation \(x^{\prime\prime}+a(t)x=0\). While the results are not new, the proofs presented simplify previous work since the Gronwall inequality is avoided which is the usual case. Cited in 1 Document MSC: 34C11 Growth and boundedness of solutions to ordinary differential equations Keywords:bounded; amplitudes; stability PDF BibTeX XML Cite \textit{A. J. Kroopnick}, Missouri J. Math. Sci. 25, No. 1, 103--105 (2013; Zbl 1271.34038) Full Text: Euclid References: [1] D. Sanchez, Ordinary Differential Equations and Stability Theory: An Introduction , Dover, New York, 1979. · Zbl 0465.34001 [2] C. Tunç, A note on boundedness of solutions to a class or non-autonomous differential equations of second order, Appl. Anal. Discrete Math. , 18 (2010), 361-372. · Zbl 1299.34128 This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. It attempts to reflect the references listed in the original paper as accurately as possible without claiming the completeness or perfect precision of the matching.