Question

If f(x) = x-2/2 then what is f^-1(x)?

Thanks! :)

Answer 1

A. 2x + 2
B. 2x - 1
C. 2x - 2
D. x - 1

Answer 2

You're given the function \[y=\frac{ x-2 }{ 2 }\] and are asked to find the inverse of this function. Note: I've replaced f(x) by y.

Steps you'll need to follow:
1) Interchange x and y in this function.
2) Solve the resulting equation for y.
3) Write the same function, substituting \[f ^{-1}(x) for .y\]

That's it!

Answer 3

Alright! so 2x + 2 is the answer.