A Fixed Point Approach to the Stability of the Cauchy Additive and Quadratic Type Functional Equation

Sun Sook Jin and Yang-Hi Lee

Journal of Applied Mathematics, 2011, vol. 2011, issue 1

Abstract: We investigate the stability of the functional equation 2f(x + y) + f(x − y) + f(y − x) − 3f(x) − f(−x) − 3f(y) − f(−y) = 0 by using the fixed point theory in the sense of Cădariu and Radu.

Date: 2011
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https://doi.org/10.1155/2011/817079

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Persistent link: https://EconPapers.repec.org/RePEc:wly:jnljam:v:2011:y:2011:i:1:n:817079

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