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   http://functions.wolfram.com/06.39.22.0001.01
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    LaplaceTransform[SinhIntegral[t], t, z] == ArcTanh[1/z]/z /; Re[z] > 1 
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   Cell[BoxData[RowBox[List[RowBox[List[RowBox[List["LaplaceTransform", "[", RowBox[List[RowBox[List["SinhIntegral", "[", "t", "]"]], ",", "t", ",", "z"]], "]"]], "\[Equal]", FractionBox[RowBox[List["ArcTanh", "[", FractionBox["1", "z"], "]"]], "z"]]], "/;", RowBox[List[RowBox[List["Re", "[", "z", "]"]], ">", "1"]]]]]] 
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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>  <mrow>  <mrow>  <msub>  <mi> ℒ </mi>  <mi> t </mi>  </msub>  <mo> [ </mo>  <mrow>  <mi> Shi </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mi> t </mi>  <mo> ) </mo>  </mrow>  <mo> ] </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mo> ( </mo>  <mi> z </mi>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ⩵ </mo>  <mrow>  <mfrac>  <mn> 1 </mn>  <mi> z </mi>  </mfrac>  <mo> ⁢ </mo>  <mrow>  <msup>  <mi> tanh </mi>  <mrow>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </msup>  <mo> ( </mo>  <mfrac>  <mn> 1 </mn>  <mi> z </mi>  </mfrac>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  <mo> /; </mo>  <mrow>  <mrow>  <mi> Re </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mi> z </mi>  <mo> ) </mo>  </mrow>  <mo> > </mo>  <mn> 1 </mn>  </mrow>  </mrow>  <annotation-xml encoding='MathML-Content'>  <apply>  <ci> Condition </ci>  <apply>  <eq />  <apply>  <ci> LaplaceTransform </ci>  <apply>  <ci> SinhIntegral </ci>  <ci> t </ci>  </apply>  <ci> t </ci>  <ci> z </ci>  </apply>  <apply>  <times />  <apply>  <times />  <cn type='integer'> 1 </cn>  <apply>  <power />  <ci> z </ci>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <apply>  <arctanh />  <apply>  <times />  <cn type='integer'> 1 </cn>  <apply>  <power />  <ci> z </ci>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  </apply>  </apply>  <apply>  <gt />  <apply>  <real />  <ci> z </ci>  </apply>  <cn type='integer'> 1 </cn>  </apply>  </apply>  </annotation-xml>  </semantics>  </math> 
   
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  | Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["LaplaceTransform", "[", RowBox[List[RowBox[List["SinhIntegral", "[", "t_", "]"]], ",", "t_", ",", "z_"]], "]"]], "]"]], "\[RuleDelayed]", RowBox[List[FractionBox[RowBox[List["ArcTanh", "[", FractionBox["1", "z"], "]"]], "z"], "/;", RowBox[List[RowBox[List["Re", "[", "z", "]"]], ">", "1"]]]]]]]]  |  
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   Date Added to functions.wolfram.com (modification date)
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