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 ArcSech

 http://functions.wolfram.com/01.30.27.2566.01

 Input Form

 ArcSech[1/Sqrt[z]] == -ArcCsch[Sqrt[-(1/z)]] - (Pi I)/2 /; Element[z, Reals] && z > 1

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["ArcSech", "[", FractionBox["1", SqrtBox["z"]], "]"]], "\[Equal]", RowBox[List[RowBox[List["-", RowBox[List["ArcCsch", "[", SqrtBox[RowBox[List["-", FractionBox["1", "z"]]]], "]"]]]], "-", FractionBox[RowBox[List["\[Pi]", " ", "\[ImaginaryI]"]], "2"]]]]], "/;", RowBox[List["(", RowBox[List[RowBox[List["z", "\[Element]", "Reals"]], "\[And]", RowBox[List["z", ">", "1"]]]], ")"]]]]]]

 MathML Form

 sech - 1 ( 1 z ) - csch - 1 ( - 1 z ) - π 2 /; ( z z > 1 ) Condition 1 z 1 2 -1 -1 -1 1 z -1 1 2 -1 2 -1 z z 1 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["ArcSech", "[", FractionBox["1", SqrtBox["z_"]], "]"]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List[RowBox[List["-", RowBox[List["ArcCsch", "[", SqrtBox[RowBox[List["-", FractionBox["1", "z"]]]], "]"]]]], "-", FractionBox[RowBox[List["\[Pi]", " ", "\[ImaginaryI]"]], "2"]]], "/;", RowBox[List[RowBox[List["z", "\[Element]", "Reals"]], "&&", RowBox[List["z", ">", "1"]]]]]]]]]]

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

 2003-08-21