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On even function is one with the property
. For
example, 
is an even function,
and 
is an even function if 
is even. An odd function has 
. Prove that the derivative of an even function is odd.
. For
example, is an even function,
and is an even function if is even. An odd function has . Prove that the derivative of an even function is odd. - 1937 reads
