$\"\"$ is an odd function.

From the definition of an odd function : $\"\"$ .

If $\"\"$ is an odd function, then prove $\"\"$ .

If $\"\"$ is an even function, then prove $\"\"$ .

The equality is $\"\"$ .

Multiply each side by negative one.

$\"\"$

$\"\"$ .

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

$\"\"$

From $\"\"$ substitute the value of $\"\"$ .

$\"\"$

Therefore, $\"\"$ is an odd function.

$\"\"$ is an odd function.