Question: what is the inverse function of f(x)=3^x?
Answer: Divide x x by 1 1 . Since g(f(x))=x g ( f ( x ) ) = x , f−1(x)=ln(x)ln(3) f - 1 ( x ) = ln ( x ) ln ( 3 ) is the inverse of f(x)=3x f ( x ) = 3 x .