Question

If Fx) = x-1, which of the following is the inverse of Fx)?

Answer 1

Finding the inverse of a function means to write the expression

`f(x)=\ldots`

and to solve it for x.

In this case, we have

`f(x)=x-1`

Adding 1 to both sides gives

`f(x)+1=x`

So, the inverse of the function is

`f^(-1)(x)=x+1`