Difference between revisions of "Absolute value"

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Revision as of 16:08, 7 March 2015

The absolute value is sometimes called "abs"

Definition

The absolute value is a function ||:RR given by:

|x|={xx0xotherwise

It simply returns the positive value of a number.

Note

More strictly the function should be given as: ||:RR0

Examples

  1. |2|=2
  2. |2|=2