$\"\"$

The functions are $\"\"$ and $\"\"$ .

Graph the functions $\"\"$ and $\"\"$ on same window:

$\"\"$

Observe the graph :

The functions $\"\"$ and $\"\"$ are symmetric about the line $\"\"$ .

Thus, the functions are inverse functions of each other.

$\"\"$

The functions $\"\"$ and $\"\"$ are symmetric about the line $\"\"$ .

Thus, the functions are inverse functions of each other.