Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10427029 | Nonlinear Analysis: Theory, Methods & Applications | 2005 | 12 Pages |
Abstract
In this paper, we obtain the general solution and the generalized Hyers-Ulam stability of the bi-quadratic functional equation f(x+y,z+w)+f(x+y,z-w)+f(x-y,z+w)+f(x-y,z-w)=4[f(x,z)+f(x,w)+f(y,z)+f(y,w)].
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Authors
Won-Gil Park, Jae-Hyeong Bae,