Talk:Absolute value
This is an old revision of this page, as edited by MelH (talk | contribs) at 00:38, April 15, 2016. It may differ significantly from current revision.
If x is a negative number, then | x | = − x. This is incorrect. It should read "If x is a negative number, then | - x | = x."
The latest change is an error. If x is a negative number, then -x is a positive number! It was correct before, the absolute value of x, where x is negative, is -x: If x is negative, | x | = − x