The function as $\"\"$ .

Find $\"\"$ .

$\"\"$

Differentiate with respect to $\"\"$ on each side.

$\"\"$ .

Product rule of derivatives: $\"\"$ .

$\"\"$

Differentiate with respect to $\"\"$ on each side.

$\"\"$

Differentiate with respect to $\"\"$ on each side.

$\"\"$

Differentiate with respect to $\"\"$ on each side.

$\"\"$

Observe the above four derivatives and from those we can write the general form of even and odd derivatives.

$\"\"$

Substitute $\"\"$ in the above form.

$\"\"$

$\"\"$ .