On a type of exponential functional equation and its superstability in the sense of Ger

In this paper, we deal with a type exponential functional equation as follows $f(xy)=f(x)^{g(y)},$ where $f$ and $g$ are two real valued functions on a commutative semigroup. Our aim of this paper is to proved that the above functional equation in the sense of Ger is superstable.

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