Question

F(x) = x - 1. Find the inverse of f(x).

Answer 1

f^-1 (x) = x+1

Explanation:

f(x) = x-1

y = x-1

Exchange x and y

x = y-1

Solve for y

Add 1 to each side

x+1 = y-1+1

x+1 = y

The inverse is x+1

f^-1 (x) = x+1