The function is $\"\"$ .

If $\"\"$ , then the function is said to be even.

If $\"\"$ , then the function is said to be odd.

Substitute $\"\"$ in $\"\"$ .

$\"\"$

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

Graph :

Graph the function $\"\"$ .

$\"\"$

Observe the above graph, it is symmetry with respect to $\"\"$ axis.

So the function is an even function.

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