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 Tanh

 http://functions.wolfram.com/01.21.16.0061.01

 Input Form

 Tanh[a] + I Cot[b] == I Cosh[a - I b] Csc[b] Sech[a]

 Standard Form

 Cell[BoxData[RowBox[List[" ", RowBox[List[RowBox[List[RowBox[List["Tanh", "[", "a", "]"]], "+", RowBox[List["\[ImaginaryI]", " ", RowBox[List["Cot", "[", "b", "]"]]]]]], "\[Equal]", RowBox[List["\[ImaginaryI]", " ", RowBox[List["Cosh", "[", RowBox[List["a", "-", RowBox[List["\[ImaginaryI]", " ", "b"]]]], "]"]], " ", RowBox[List["Csc", "[", "b", "]"]], " ", RowBox[List["Sech", "[", "a", "]"]]]]]]]]]]

 MathML Form

 tanh ( a ) + cot ( b ) cosh ( a - b ) csc ( b ) sech ( a ) a b a -1 b b a [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List[RowBox[List["Tanh", "[", "a_", "]"]], "+", RowBox[List["\[ImaginaryI]", " ", RowBox[List["Cot", "[", "b_", "]"]]]]]], "]"]], "\[RuleDelayed]", RowBox[List["\[ImaginaryI]", " ", RowBox[List["Cosh", "[", RowBox[List["a", "-", RowBox[List["\[ImaginaryI]", " ", "b"]]]], "]"]], " ", RowBox[List["Csc", "[", "b", "]"]], " ", RowBox[List["Sech", "[", "a", "]"]]]]]]]]

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

 2003-08-21