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 BesselK

 http://functions.wolfram.com/03.04.03.0018.01

 Input Form

 BesselK[7/2, z] == (Sqrt[Pi/2] (15 + 15 z + 6 z^2 + z^3))/(E^z z^(7/2))

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List["BesselK", "[", RowBox[List[FractionBox["7", "2"], ",", "z"]], "]"]], "\[Equal]", FractionBox[RowBox[List[SuperscriptBox["\[ExponentialE]", RowBox[List["-", "z"]]], " ", SqrtBox[FractionBox["\[Pi]", "2"]], " ", RowBox[List["(", RowBox[List["15", "+", RowBox[List["15", " ", "z"]], "+", RowBox[List["6", " ", SuperscriptBox["z", "2"]]], "+", SuperscriptBox["z", "3"]]], ")"]]]], SuperscriptBox["z", RowBox[List["7", "/", "2"]]]]]]]]

 MathML Form

 K 7 2 ( z ) π 2 - z ( z 3 + 6 z 2 + 15 z + 15 ) z 7 / 2 BesselK 7 2 z 2 -1 1 2 -1 z z 3 6 z 2 15 z 15 z 7 2 -1 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["BesselK", "[", RowBox[List[FractionBox["7", "2"], ",", "z_"]], "]"]], "]"]], "\[RuleDelayed]", FractionBox[RowBox[List[SuperscriptBox["\[ExponentialE]", RowBox[List["-", "z"]]], " ", SqrtBox[FractionBox["\[Pi]", "2"]], " ", RowBox[List["(", RowBox[List["15", "+", RowBox[List["15", " ", "z"]], "+", RowBox[List["6", " ", SuperscriptBox["z", "2"]]], "+", SuperscriptBox["z", "3"]]], ")"]]]], SuperscriptBox["z", RowBox[List["7", "/", "2"]]]]]]]]

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

 2002-12-18