A function that turns a power to a product/sum?

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I just recently started learning about the logarithm functions, and its concept is quite amazing (f(x.y)=f(x)+f(y)). Now I'm asking for a similar function but instead of x.y ; we use x^(y) (like f(x^(y))=f(x).f(y)/or a sum.... or it could involve another function whatsoever). Something like (Linearization?) but in calculus (Sorry my vocab isn't that great). Thank you