The function is $\"\"$ .

$\"\"$ is in the form of composite function $\"\"$ .

$\"\"$ .

Definition of composite function :

The notation $\"\"$ means that the function $\"\"$ is applied first and then $\"\"$ is applied.

$\"\"$ .

Consider $\"\"$ .

$\"\"$

From above expression, $\"\"$ and $\"\"$ .

$\"\"$ and $\"\"$ .