On a functional equation that has the quadratic-multiplicative property
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Abstract In this article, we obtain the general solution and prove the Hyers-Ulam stability of the following quadratic-multiplicative functional equation: \phi (st-uv)+\phi (sv+tu)={[}\phi (s)+\phi (u)]{[}\phi (t)+\phi (v)] by using the direct method and the fixed point method.
2012 ◽
Vol 09
(05)
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pp. 1220009
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2013 ◽
Vol 373-375
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pp. 1881-1884
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