Which is the inverse of the function f(x) = 4x2

 and  

Step-by-step explanation:

The function is given as  

to find inverse, we follow the steps shown below:

1. write "y" in place of "f(x)"

2. interchange "x" and "y"

3. solve for the new "y"

4. replace y with f^-1(x)

Let's do this:

These 2 are the inverse functions.

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

We follow the steps below:

Replace f (x) with y:

We exchange variables;

We solve for y:

We divide between 4 on both sides of the equation:

We apply square root to both sides to eliminate the exponent:

We substitute y for :

true

step-by-step explanation:

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3