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 Erfc

 http://functions.wolfram.com/06.27.06.0015.01

 Input Form

 Erfc[z] \[Proportional] 1 - (2/Sqrt[Pi]) (z - z^3/3 + z^5/10 - O[z^7])

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List["Erfc", "[", "z", "]"]], "\[Proportional]", RowBox[List["1", "-", RowBox[List[FractionBox["2", SqrtBox["\[Pi]"]], RowBox[List["(", RowBox[List["z", "-", FractionBox[SuperscriptBox["z", "3"], "3"], "+", FractionBox[SuperscriptBox["z", "5"], "10"], "-", RowBox[List["O", "[", SuperscriptBox["z", "7"], "]"]]]], ")"]]]]]]]]]]

 MathML Form

 erfc ( z ) 1 - 2 π ( z - z 3 3 + z 5 10 - O ( z 7 ) ) Proportional Erfc z 1 -1 2 1 2 -1 z -1 z 3 3 -1 z 5 10 -1 -1 O z 7 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["Erfc", "[", "z_", "]"]], "]"]], "\[RuleDelayed]", RowBox[List["1", "-", FractionBox[RowBox[List["2", " ", RowBox[List["(", RowBox[List["z", "-", FractionBox[SuperscriptBox["z", "3"], "3"], "+", FractionBox[SuperscriptBox["z", "5"], "10"], "-", SuperscriptBox[RowBox[List["O", "[", "z", "]"]], "7"]]], ")"]]]], SqrtBox["\[Pi]"]]]]]]]]

 Date Added to functions.wolfram.com (modification date)

 2007-05-02