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http://functions.wolfram.com/01.23.27.0050.01
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Csch[z]^2 == (1 - Tanh[z]^2)/Tanh[z]^2
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Cell[BoxData[RowBox[List[SuperscriptBox[RowBox[List["Csch", "[", "z", "]"]], "2"], "\[Equal]", FractionBox[RowBox[List["1", "-", SuperscriptBox[RowBox[List["Tanh", "[", "z", "]"]], "2"]]], SuperscriptBox[RowBox[List["Tanh", "[", "z", "]"]], "2"]]]]]]
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<math xmlns='http://www.w3.org/1998/Math/MathML' mathematica:form='TraditionalForm' xmlns:mathematica='http://www.wolfram.com/XML/'> <semantics> <mrow> <mrow> <msup> <mi> csch </mi> <mn> 2 </mn> </msup> <mo> ( </mo> <mi> z </mi> <mo> ) </mo> </mrow> <mo> ⩵ </mo> <mfrac> <mrow> <mn> 1 </mn> <mo> - </mo> <mrow> <msup> <mi> tanh </mi> <mn> 2 </mn> </msup> <mo> ( </mo> <mi> z </mi> <mo> ) </mo> </mrow> </mrow> <mrow> <msup> <mi> tanh </mi> <mn> 2 </mn> </msup> <mo> ( </mo> <mi> z </mi> <mo> ) </mo> </mrow> </mfrac> </mrow> <annotation-xml encoding='MathML-Content'> <apply> <eq /> <apply> <power /> <apply> <csch /> <ci> z </ci> </apply> <cn type='integer'> 2 </cn> </apply> <apply> <times /> <apply> <plus /> <cn type='integer'> 1 </cn> <apply> <times /> <cn type='integer'> -1 </cn> <apply> <power /> <apply> <tanh /> <ci> z </ci> </apply> <cn type='integer'> 2 </cn> </apply> </apply> </apply> <apply> <power /> <apply> <power /> <apply> <tanh /> <ci> z </ci> </apply> <cn type='integer'> 2 </cn> </apply> <cn type='integer'> -1 </cn> </apply> </apply> </apply> </annotation-xml> </semantics> </math>
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| Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", SuperscriptBox[RowBox[List["Csch", "[", "z_", "]"]], "2"], "]"]], "\[RuleDelayed]", FractionBox[RowBox[List["1", "-", SuperscriptBox[RowBox[List["Tanh", "[", "z", "]"]], "2"]]], SuperscriptBox[RowBox[List["Tanh", "[", "z", "]"]], "2"]]]]]] |
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Date Added to functions.wolfram.com (modification date)
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