A Fixed Point Approach to the Stability of Quadratic Functional Equation with Involution
© S.-M. Jung and Z.-H. Lee. 2008
Received: 27 September 2007
Accepted: 26 November 2007
Published: 10 June 2008
Cădariu and Radu applied the fixed point method to the investigation of Cauchy and Jensen functional equations. In this paper, we will adopt the idea of Cădariu and Radu to prove the Hyers-Ulam-Rassias stability of the quadratic functional equation with involution.
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