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 Tanh

 http://functions.wolfram.com/01.21.21.0026.01

 Input Form

 Integrate[E^(a z) Tanh[a z], z] == (E^(a z) - 2 ArcTan[E^(a z)])/a

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List["\[Integral]", RowBox[List[SuperscriptBox["\[ExponentialE]", RowBox[List["a", " ", "z"]]], " ", RowBox[List["Tanh", "[", RowBox[List["a", " ", "z"]], "]"]], RowBox[List["\[DifferentialD]", "z"]]]]]], "\[Equal]", FractionBox[RowBox[List[SuperscriptBox["\[ExponentialE]", RowBox[List["a", " ", "z"]]], "-", RowBox[List["2", " ", RowBox[List["ArcTan", "[", SuperscriptBox["\[ExponentialE]", RowBox[List["a", " ", "z"]]], "]"]]]]]], "a"]]]]]

 MathML Form

 a z tanh ( a z ) z a z - 2 tan - 1 ( a z ) a z a z a z a z -1 2 a z a -1 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["\[Integral]", RowBox[List[RowBox[List[SuperscriptBox["\[ExponentialE]", RowBox[List["a_", " ", "z_"]]], " ", RowBox[List["Tanh", "[", RowBox[List["a_", " ", "z_"]], "]"]]]], RowBox[List["\[DifferentialD]", "z_"]]]]]], "]"]], "\[RuleDelayed]", FractionBox[RowBox[List[SuperscriptBox["\[ExponentialE]", RowBox[List["a", " ", "z"]]], "-", RowBox[List["2", " ", RowBox[List["ArcTan", "[", SuperscriptBox["\[ExponentialE]", RowBox[List["a", " ", "z"]]], "]"]]]]]], "a"]]]]]

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

 2002-12-18