Question

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

Answer 1

The guy above is right.

f−1(x)=log3(x−1) is the correct answer, I know this cause I took the test

Answer 2

`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)`