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Korean Mathematical Society JKMS

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J. Korean Math. Soc. 2001; 38(3): 645-656

Printed May 1, 2001

Copyright © The Korean Mathematical Society.

Hyers-Ulam stability of the quadratic equation of Pexider type

Soon-Mo Jung and Prasanna K. Sahoo

Hong-Ik University and University of Louisville

Abstract

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In this paper, we will prove the Hyers-Ulam stability of the quadratic functional equation of Pexider type, $f_{1}(x+y) + f_{2}(x-y) = f_{3}(x) + f_{4}(y)$.

Keywords: Hyers-Ulam stability, quadratic equation of Pexider type

MSC numbers: Primary 39B82, 39B62

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