Prove that the derivative of (a) an odd function is an even function;

Prove that the derivative of and odd function is an even function.

Prove that the derivative of an odd function is an even function.

Prove that the derivative of an odd function an ever function .

The derivative of an odd function is :

The derivative of an odd function is always

Prove that the derivative of an even function is an odd function and that of an odd function is an even function.