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  • Research Article
  • Open Access

On the Stability of Trigonometric Functional Equations

Advances in Difference Equations20082007:090405

  • Received: 17 February 2007
  • Accepted: 5 October 2007
  • Published:


The aim of this paper is to study the superstability related to the d'Alembert, the Wilson, the sine functional equations for the trigonometric functional equations as follows: .


  • Differential Equation
  • Partial Differential Equation
  • Ordinary Differential Equation
  • Functional Analysis
  • Functional Equation


Authors’ Affiliations

Department of Mathematics, Kangnam University, Youngin, Gyeonggi, 446-702, South Korea


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© Gwang Hui Kim. 2007

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