The function $\"\"$ is even and the function $\"\"$ is odd.

The function $\"\"$ is even, then $\"\"$ .

The function $\"\"$ is odd, then $\"\"$ .

The composite function $\"\"$ .

$\"\"$

Since $\"\"$ is an even function.

$\"\"$

Since $\"\"$ is an odd function.

$\"\"$

Therefore, the composite function $\"\"$ is even.

$\"\"$ is even.