Stability of Approximate Quadratic Mappings

Stability of Approximate Quadratic Mappings

We investigate the general solution of the quadratic functional equation f(2x+y)+3f(2x−y)=4f(x−y)+12f(x), in the class of all functions between quasi-β-normed spaces, and then we prove the generalized Hyers-Ulam stability of the equation by using direct method and fi...

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Bibliographic Details
Main Authors:	Juri Lee, Hark-Mahn Kim, Minyoung Kim
Format:	Article
Language:	English
Published:	SpringerOpen 2010-01-01
Series:	Journal of Inequalities and Applications
Online Access:	http://dx.doi.org/10.1155/2010/184542

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