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 Exp

 http://functions.wolfram.com/01.03.21.0083.01

 Input Form

 Integrate[(1/Sqrt[z]) E^(a z), z] == (Sqrt[Pi] Erfi[Sqrt[a] Sqrt[z]])/Sqrt[a]

 Standard Form

 Cell[BoxData[RowBox[List[RowBox[List["\[Integral]", RowBox[List[FractionBox["1", SqrtBox["z"]], SuperscriptBox["\[ExponentialE]", RowBox[List["a", " ", "z"]]], RowBox[List["\[DifferentialD]", "z"]]]]]], "\[Equal]", FractionBox[RowBox[List[SqrtBox["\[Pi]"], " ", RowBox[List["Erfi", "[", RowBox[List[SqrtBox["a"], " ", SqrtBox["z"]]], "]"]]]], SqrtBox["a"]]]]]]

 MathML Form

 a z z z π erfi ( a z ) a z a z z 1 2 -1 1 2 Erfi a 1 2 z 1 2 a 1 2 -1 [/itex]

 Rule Form

 Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["\[Integral]", RowBox[List[FractionBox[SuperscriptBox["\[ExponentialE]", RowBox[List["a_", " ", "z_"]]], SqrtBox["z_"]], RowBox[List["\[DifferentialD]", "z_"]]]]]], "]"]], "\[RuleDelayed]", FractionBox[RowBox[List[SqrtBox["\[Pi]"], " ", RowBox[List["Erfi", "[", RowBox[List[SqrtBox["a"], " ", SqrtBox["z"]]], "]"]]]], SqrtBox["a"]]]]]]

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

 2002-12-18