ON THE HYERS-ULAM-RASSIAS STABILITY OF A PEXIDERIZED MIXED TYPE QUADRATIC FUNCTIONAL EQUATION

Abstract

We establish the Hyers-Ulam-Rassias stability of the Pexiderized mixed type quadratic equation f1(x + y + z) + f2(x − y) + f3(x − z) − f4(x − y − z) − f5(x + y) − f6(x + z) = 0 in the spirit of D. H. Hyers, S. M. Ulam and Th. M. Rassias.

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