Question

Choose the inverse of y=X2-2

Answer 1

For this case we must find the inverse of the following function:

$y = x ^ 2-2$

We exchange the variables:

$x = y ^ 2-2$

We clear the variable "y":

Adding 2 to both sides we have:

$x + 2 = y ^ 2$

Applying square root on both sides of the equation:

$y = \pm \sqrt {x + 2}$

We change y by $f ^ {- 1} (x)$:$f ^ {- 1} (x) =\pm \sqrt {x + 2}$

Answer:

$f ^ {- 1} (x) = \pm\sqrt {x + 2}$

Answer 2

Answer:

26

Step-by-step explanation: