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Erfc ​

The complementary error function , the Gaussian's tail-probability integral.

WikipediaError functionMathWorldErfcErfWikidataQ579262DLMF7.2.E27.2.E1FungrimErfcFungrim entry7f355dae3110bfc86eec0205Wolfram LanguageErfc✓
Erfc(z)the complementary error function .

Domain: Special functions

Details
  • Defined as . See Erf.
  • , , .
  • , the mirror image of Erf's oddness.
  • Computed directly from a continued fraction for large rather than as , since that subtraction would lose all precision once rounds to .
  • compute-engine requires an inexact (floating-point) argument to produce a numeric value under plain evaluation, the same convention as Erf.

Examples

See also: Erf