Which function is the inverse of f(x)=log3(x−1)f(x) = \log_3(x-1)f(x)=log3(x−1)?
f−1(x)=3x−1f^{-1}(x) = 3^x - 1f−1(x)=3x−1
f−1(x)=3x+1f^{-1}(x) = 3^x + 1f−1(x)=3x+1
f−1(x)=3x+1f^{-1}(x) = 3^{x+1}f−1(x)=3x+1
f−1(x)=logx(3)+1f^{-1}(x) = \log_{x}(3) + 1f−1(x)=logx(3)+1