Inverse square root (x+3)

The inverse function is f (x) = x^2 - 3

Step-by-step explanation:

To find the inverse of any function, start by switching the x and f (x) values.

f (x) = √ (x + 3)

x = √ (f (x) + 3)

Now solve for the new f (x). The result will be your inverse function.

x = √ (f (x) + 3)

x^2 = f (x) + 3

x^2 - 3 = f (x)