The Generalized Hyers-Ulam-Rassias Stability of a Quadratic Functional Equation

P. Nakmahachalasint


We give the general solution of the functional equation $f(2x - y) + f(2y - z) + f(2z - x) + 2f(x + y + z) = 7f(x) + 7f(y) + 7f(z), and investigate its generalized Hyers-Ulam-Rassias stability.

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The Thai Journal of Mathematics organized and supported by The Mathematical Association of Thailand and Thailand Research Council and the Center for Promotion of Mathematical Research of Thailand (CEPMART).

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|ISSN 1686-0209|