Commun. Korean Math. Soc. 2013; 28(2): 269-283
Printed April 1, 2013
https://doi.org/10.4134/CKMS.2013.28.2.269
Copyright © The Korean Mathematical Society.
Sun-Sook Jin and Yang-Hi Lee
Gongju National University of Education, Gongju National University of Education
In this paper, we investigate a stability of the functional equation $$ \sum_{i=0}^3 {}_3C_i (-1)^{3-i}f(ix+y) =0 $$ by using the fixed point theory in the sense of L. C\u adariu and V. Radu.
Keywords: generalized polynomial functional equation of degree 2, fixed point method, Hyers-Ulam stability
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