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 Sqrt

 http://functions.wolfram.com/01.01.16.0100.01

 Input Form

 1/Sqrt[1 - Sqrt[z]] - 1/Sqrt[1 + Sqrt[z]] == (Sqrt[2] Sqrt[1 - Sqrt[1 - z]])/ Sqrt[1 - z]

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List[FractionBox["1", SqrtBox[RowBox[List["1", "-", SqrtBox["z"]]]]], "-", FractionBox["1", SqrtBox[RowBox[List["1", "+", SqrtBox["z"]]]]]]], "\[Equal]", " ", FractionBox[RowBox[List[SqrtBox["2"], SqrtBox[RowBox[List["1", "-", SqrtBox[RowBox[List["1", "-", "z"]]]]]]]], SqrtBox[RowBox[List["1", "-", "z"]]]]]]]]

 MathML Form

 1 1 - z - 1 1 + z 2 1 - 1 - z 1 - z 1 1 -1 z 1 2 1 2 -1 -1 1 1 z 1 2 1 2 -1 2 1 2 1 -1 1 -1 z 1 2 1 2 1 -1 z 1 2 -1 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List[FractionBox["1", SqrtBox[RowBox[List["1", "-", SqrtBox["z_"]]]]], "-", FractionBox["1", SqrtBox[RowBox[List["1", "+", SqrtBox["z_"]]]]]]], "]"]], "\[RuleDelayed]", FractionBox[RowBox[List[SqrtBox["2"], " ", SqrtBox[RowBox[List["1", "-", SqrtBox[RowBox[List["1", "-", "z"]]]]]]]], SqrtBox[RowBox[List["1", "-", "z"]]]]]]]]

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

 2007-05-02