Question

What is the inverse of the function? f(x)=3^x−1

Answer 1

$y = f(x) = 3^{x} - 1$

let x be y and y be the x, so we have

$x = 3^{y} - 1$

$3^{y} = x + 1$

$log_{3}(3)^{y} = log_3(x + 1)$

$y = log_{3}(x+1)$