Question

. Let f(x) = x2 - 16. Find f-1(x).

Answer 1

I guess function does not have inverse function..

Answer 2

\[f'(x)=\pm \sqrt{x+16} \]

Answer 3

thanks

Answer 4

I meant \[f^{-1}=\pm \sqrt{x+16}\]

there are two options..