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NonNegative
  • NonNegative[ x ] gives True if x is a non-negative number.
  • NonNegative[ x ] gives False if x is manifestly a negative or complex numerical quantity. Otherwise, it remains unevaluated.
  • A definition like NonNegative[ x ] = True effectively specifies that x is a non-negative number.
  • Definitions for Sign are tested in determining whether linear combinations of expressions are non-negative.
  • See also: Negative, Positive, Sign.

    Further Examples

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