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 InverseErf

 http://functions.wolfram.com/06.29.06.0006.01

 Input Form

 InverseErf[z] \[Proportional] (Sqrt[Pi]/2) (z + (Pi z^3)/12 + (7 Pi^2 z^5)/480) + O[z^7]

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List["InverseErf", "[", "z", "]"]], "\[Proportional]", RowBox[List[RowBox[List[FractionBox[SqrtBox["\[Pi]"], "2"], RowBox[List["(", RowBox[List["z", "+", FractionBox[RowBox[List["\[Pi]", " ", SuperscriptBox["z", "3"]]], "12"], "+", FractionBox[RowBox[List["7", " ", SuperscriptBox["\[Pi]", "2"], " ", SuperscriptBox["z", "5"]]], "480"]]], ")"]]]], "+", RowBox[List["O", "[", SuperscriptBox["z", "7"], "]"]]]]]]]]

 MathML Form

 erf - 1 ( z ) π 2 ( z + π z 3 12 + 7 π 2 z 5 480 ) + O ( z 7 ) Proportional InverseErf z 1 2 2 -1 z z 3 12 -1 7 2 z 5 480 -1 O z 7 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["InverseErf", "[", "z_", "]"]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List[FractionBox["1", "2"], " ", SqrtBox["\[Pi]"], " ", RowBox[List["(", RowBox[List["z", "+", FractionBox[RowBox[List["\[Pi]", " ", SuperscriptBox["z", "3"]]], "12"], "+", FractionBox[RowBox[List["7", " ", SuperscriptBox["\[Pi]", "2"], " ", SuperscriptBox["z", "5"]]], "480"]]], ")"]]]], "+", SuperscriptBox[RowBox[List["O", "[", "z", "]"]], "7"]]]]]]]

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

 2007-05-02