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

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

alex6799 · Answer

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

shaswatrajput · Answer

x^2+5

mathmale · Answer

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.

alex6799 · Answer

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

mathmale · Answer

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