Question

Question in screenshot

Answer 1

i can only say B is there other answer which is correct ?

Answer 2

1. Only one to one functions have inverses

If g is the inverse of f then f is the inverse of g. We say f and g are inverses of each other.

2. If f and g are inverses of each other then both are one to one functions.

3. f and g are inverses of each other if and only if

(f o g)(x) = x , x in the domain of g

and

(g o f)(x) = x , x in the domain of f
4.
If f and g are inverses of each other then

the domain of f is equal to the range of g

and

the range of f is equal to the domain of g.