Kyungpook Mathematical Journal

Department of Mathematics, Kyungpook National University (경북대학교 자연과학대학 수학과)
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On the Hyers-Ulam-Rassias Stability of the Bi-Jensen Functional Equation

  • Jun, Kil-Woung (Department of Mathematics, Chungnam National University) ;
  • Han, Mi-Hyen (Department of Mathematics, Chungnam National University) ;
  • Lee, Yang-Hi (Department of Mathematics Education, Gongju National University of Education)
  • Received : 2007.07.02
  • Published : 2008.12.31
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Abstract

In this paper, we obtain the Hyers-Ulam-Rassias stability of a bi-Jensen functional equation $4f(\frac {x+y}{2},\;\frac {z+w}{2})=f(x,z)+f(x,w)+f(y,z)+f(y,w)$.

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References

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