$\"\"$

The function is $\"\"$ .

If $\"\"$ then the function is even.

If $\"\"$ then the function is odd.

Substitute $\"\"$ in the function $\"\"$ .

$\"\"$

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

$\"\"$

Graph :

Graph of the function $\"\"$ .

In below graph, it is symmetry with respect to origin so the function is an odd function.

$\"\"$

$\"\"$ is an odd function.