Question

What is the inverse of the function f(x) = 2x + 1?​

Answer 1

Explanation:

1. Rewrite the given function as y = 2x + 1.

2. Interchange x and y: x = 2y + 1

3. Solve this result for y: 2y = x - 1, or y = (1/2)(x - 1)

This last result is the desired inverse function.

Answer 2

f(x)-1 =

x/2 - 1/2