Question

Let f(x)= Find f -1.

A.
f -1 (x) = x 2 + 25; y ≥ 25

B.
f -1 (x) = x 2 + 5; y ≥ 5

C.
f -1 (x) = (x + 5) 2; y ≥ 5

D.
f -1 (x) = x 2 + 25; y > 5

Answer 1

let f(x)= \[\sqrt{x-5}\] find \[f ^{-1}\]

Answer 2

x^2+5

Answer 3

Alex, it's great that you know how to use Equation Editor. Please don't write f -1; it's misleading and likely to be misinterpreted.

Answer 4

f^-1 is part of the question i need help with so bite me @mathmale!!!

Answer 5

So, you have \[f(x)=\sqrt{x-5}\]