Journal of the Chungcheong Mathematical Society (충청수학회지)

The Chungcheong Mathematical Society (충청수학회)
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ON STABILITY OF A QUADRATIC FUNCTIONAL EQUATION

  • Jun, Kil-Woung (Department of Mathematics Chungnam National University) ;
  • Kim, Hark-Mann (Department of Mathematics Chungnam National University) ;
  • Lee, Don O (Information Center for Mathematical Sciences Korea Advanced Institute of Science and Technology)
  • Received : 2003.01.18
  • Published : 2003.02.26
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Abstract

In this paper, we investigate the new quadratic type functional equation f(2x + y) - f(x + 2y) = 3f(x) - 3f(y) and prove the stablility of this equation in the spirit of Hyers, Ulam, Rassias and G$\breve{a}$vruţa.

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