# How do you determine if #xy=1# is an even or odd function?

##### 1 Answer

Apr 24, 2016

I'm assuming that

#### Explanation:

The easiest way to determine whether a function is even or odd is to evaluate

and from the condition

To fully understand this problem let's look at an example of an even function:

Here, since

Important notice: some functions, unlike integers, can be both odd and even (e.g.