9514 1404 393
Answer:
a. square root
Step-by-step explanation:
For function f(x) = x², the inverse function is found by solving ...
x = f(y)
x = y²
If we take the square root of both sides of this equation, we get ...
√x = y
That is, the inverse of the quadratic function f(x) is ...
f⁻¹(x) = √x . . . . . square root
