Unknown
This is the current revision of Unknown as edited by DavidB4-bot (talk | contribs) at 21:14, July 13, 2016. This URL is a permanent link to this version of this page.
In mathematics, when a letter is used to represent a number or set of numbers it is called an unknown. This letter usually has a very specific range of values, unlike a variable which can be changed arbitrarily to alter the value of a function which acts on the variable.[1]