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 Tanh

 http://functions.wolfram.com/01.21.21.0101.01

 Input Form

 Integrate[Cosh[3 z] Tanh[z], z] == (1/3) (-6 Cosh[z] + Cosh[3 z])

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List["\[Integral]", RowBox[List[RowBox[List["Cosh", "[", RowBox[List["3", " ", "z"]], "]"]], " ", RowBox[List["Tanh", "[", "z", "]"]], RowBox[List["\[DifferentialD]", "z"]]]]]], "\[Equal]", RowBox[List[FractionBox["1", "3"], " ", RowBox[List["(", RowBox[List[RowBox[List[RowBox[List["-", "6"]], " ", RowBox[List["Cosh", "[", "z", "]"]]]], "+", RowBox[List["Cosh", "[", RowBox[List["3", " ", "z"]], "]"]]]], ")"]]]]]]]]

 MathML Form

 cosh ( 3 z ) tanh ( z ) z 1 3 ( cosh ( 3 z ) - 6 cosh ( z ) ) z 3 z z 1 3 3 z -1 6 z [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["\[Integral]", RowBox[List[RowBox[List[RowBox[List["Cosh", "[", RowBox[List["3", " ", "z_"]], "]"]], " ", RowBox[List["Tanh", "[", "z_", "]"]]]], RowBox[List["\[DifferentialD]", "z_"]]]]]], "]"]], "\[RuleDelayed]", RowBox[List[FractionBox["1", "3"], " ", RowBox[List["(", RowBox[List[RowBox[List[RowBox[List["-", "6"]], " ", RowBox[List["Cosh", "[", "z", "]"]]]], "+", RowBox[List["Cosh", "[", RowBox[List["3", " ", "z"]], "]"]]]], ")"]]]]]]]]

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

 2002-12-18