Question

What is the inverse function of `f(x) = 2x-4`?

Answer 1

`f^-1 x=1/2 x +2`

Explanation:

Write the function as y= 2x-4, then write x for y and y for x,

x= 2y-4. Now solve it for y, y=`1/2 x +2`

This is `f^-1 x=1/2 x +2`