Question

Fine the inverse of the function.
f(x)=square x-9

Answer 1

\[y = x^2 - 9\] To find inverse, switch x & y :\[x = y^2 - 9\]\[y = \pm \sqrt{x-9}\]

Answer 2

how would i write it as f^-1= for x

Answer 3

\[f^{-1} (x) = \pm \sqrt{x-9}\]