# Example:Table as a function

([itex]1) [/itex]2 | [itex]3 ([/itex]4) | [itex]5 ([/itex]6)

Another way to draw a function is with a table:

x
a 1
b 1
c 1

This almost describes a function; the domain is clearly (because if there were any other domain elements, would not be a function); and the rule is clear. However, the codomain is not clear: is it ? Or ? Or , or ? When describing a function with a table, the codomain should be specified somewhere.