Question

Given f(x)=9x^9, find f^-1(x). Then state whether f^-1(x) is a function.

Answer 1

\[\Large f(x)=9x^9 \Leftrightarrow y=9x^9 \]
to find the inverse, swap the x and the y and solve again for the given form:
\[\Large x=9y^9 \]
Can you solve for y?

Answer 2

I get to y^9=x/9 and I'm not sure what id do from there

Answer 3

take the 9th root :)

Answer 4

idk what the 9th root of x/9 would be

Answer 5

it's a value, written as:
\[\Large y=\sqrt[9]{\frac{x}{9}} \]

Answer 6

but that's not an answer choice

Answer 7

you can list me down your answer choices if you want, however, that is the inverse function .

Answer 8

these are my choices

Answer 9

\[\frac{ x }{ 9 }^{1/9}\] is the answer

Answer 10

and f^-1(x) is a function so c is your answer

Answer 11

thank you