Editing Even and odd functions (section)

===Multiplication and division===
* The [[multiplication|product]] and [[Division (mathematics)|quotient]] of two even functions is an even function.
** This implies that the product of any number of even functions is also even.
** This implies that the [[reciprocal function|reciprocal]] of an even function is also even.
* The product and quotient of two odd functions is an even function.
* The product and both quotients of an even function and an odd function is an odd function.
** This implies that the reciprocal of an odd function is odd.