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 Exp

 http://functions.wolfram.com/01.03.03.0007.01

 Input Form

 E^((Pi I)/10) == (1/4) I (Sqrt[5] - 1) + (1/2) Sqrt[(1/2) (5 + Sqrt[5])]

 Standard Form

 Cell[BoxData[RowBox[List[SuperscriptBox["\[ExponentialE]", FractionBox[RowBox[List["\[Pi]", " ", "\[ImaginaryI]"]], "10"]], "\[Equal]", RowBox[List[RowBox[List[FractionBox["1", "4"], " ", "\[ImaginaryI]", " ", RowBox[List["(", RowBox[List[SqrtBox["5"], "-", "1"]], ")"]]]], "+", RowBox[List[FractionBox["1", "2"], " ", SqrtBox[RowBox[List[FractionBox["1", "2"], " ", RowBox[List["(", RowBox[List["5", "+", SqrtBox["5"]]], ")"]]]]]]]]]]]]]

 MathML Form

 π 10 1 2 5 + 5 2 + 4 ( 5 - 1 ) 10 -1 1 2 5 5 1 2 2 -1 1 2 4 -1 5 1 2 -1 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", SuperscriptBox["\[ExponentialE]", FractionBox[RowBox[List["\[Pi]", " ", "\[ImaginaryI]"]], "10"]], "]"]], "\[RuleDelayed]", RowBox[List[RowBox[List[FractionBox["1", "4"], " ", "\[ImaginaryI]", " ", RowBox[List["(", RowBox[List[SqrtBox["5"], "-", "1"]], ")"]]]], "+", RowBox[List[FractionBox["1", "2"], " ", SqrtBox[RowBox[List[FractionBox["1", "2"], " ", RowBox[List["(", RowBox[List["5", "+", SqrtBox["5"]]], ")"]]]]]]]]]]]]]

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

 2001-10-29