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   http://functions.wolfram.com/07.07.21.0005.01
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    Integrate[Log[(1 + z)/(1 - z)] LegendreP[\[Nu], z], z] == 
 (2 LegendreP[\[Nu], z])/(\[Nu] + \[Nu]^2) + 
  (1/(1 + 2 \[Nu])) ((-LegendreP[-1 + \[Nu], z] + LegendreP[1 + \[Nu], z]) 
    Log[(1 + z)/(1 - z)]) 
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   Cell[BoxData[RowBox[List[RowBox[List["\[Integral]", RowBox[List[RowBox[List["Log", "[", FractionBox[RowBox[List["1", "+", "z"]], RowBox[List["1", "-", "z"]]], "]"]], RowBox[List["LegendreP", "[", RowBox[List["\[Nu]", ",", "z"]], "]"]], RowBox[List["\[DifferentialD]", "z"]]]]]], "\[Equal]", RowBox[List[FractionBox[RowBox[List["2", " ", RowBox[List["LegendreP", "[", RowBox[List["\[Nu]", ",", "z"]], "]"]]]], RowBox[List["\[Nu]", "+", SuperscriptBox["\[Nu]", "2"]]]], "+", RowBox[List[FractionBox["1", RowBox[List["1", "+", RowBox[List["2", " ", "\[Nu]"]]]]], RowBox[List["(", RowBox[List[RowBox[List["(", RowBox[List[RowBox[List["-", RowBox[List["LegendreP", "[", RowBox[List[RowBox[List[RowBox[List["-", "1"]], "+", "\[Nu]"]], ",", "z"]], "]"]]]], "+", RowBox[List["LegendreP", "[", RowBox[List[RowBox[List["1", "+", "\[Nu]"]], ",", "z"]], "]"]]]], ")"]], " ", RowBox[List["Log", "[", FractionBox[RowBox[List["1", "+", "z"]], RowBox[List["1", "-", "z"]]], "]"]]]], ")"]]]]]]]]]] 
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   <math xmlns='http://www.w3.org/1998/Math/MathML' mathematica:form='TraditionalForm' xmlns:mathematica='http://www.wolfram.com/XML/'>  <semantics>  <mrow>  <mrow>  <mo> ∫ </mo>  <mrow>  <mrow>  <mi> log </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mfrac>  <mrow>  <mn> 1 </mn>  <mo> + </mo>  <mi> z </mi>  </mrow>  <mrow>  <mn> 1 </mn>  <mo> - </mo>  <mi> z </mi>  </mrow>  </mfrac>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <msub>  <semantics>  <mi> P </mi>  <annotation encoding='Mathematica'> TagBox["P", LegendreP] </annotation>  </semantics>  <mi> ν </mi>  </msub>  <mo> ( </mo>  <mi> z </mi>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mo> ⅆ </mo>  <mi> z </mi>  </mrow>  </mrow>  </mrow>  <mo> ⩵ </mo>  <mrow>  <mfrac>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mrow>  <msub>  <semantics>  <mi> P </mi>  <annotation encoding='Mathematica'> TagBox["P", LegendreP] </annotation>  </semantics>  <mi> ν </mi>  </msub>  <mo> ( </mo>  <mi> z </mi>  <mo> ) </mo>  </mrow>  </mrow>  <mrow>  <msup>  <mi> ν </mi>  <mn> 2 </mn>  </msup>  <mo> + </mo>  <mi> ν </mi>  </mrow>  </mfrac>  <mo> + </mo>  <mrow>  <mfrac>  <mn> 1 </mn>  <mrow>  <mrow>  <mn> 2 </mn>  <mo> ⁢ </mo>  <mi> ν </mi>  </mrow>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </mfrac>  <mo> ⁢ </mo>  <mrow>  <mi> log </mi>  <mo> ⁡ </mo>  <mo> ( </mo>  <mfrac>  <mrow>  <mn> 1 </mn>  <mo> + </mo>  <mi> z </mi>  </mrow>  <mrow>  <mn> 1 </mn>  <mo> - </mo>  <mi> z </mi>  </mrow>  </mfrac>  <mo> ) </mo>  </mrow>  <mo> ⁢ </mo>  <mrow>  <mo> ( </mo>  <mrow>  <mrow>  <msub>  <semantics>  <mi> P </mi>  <annotation encoding='Mathematica'> TagBox["P", LegendreP] </annotation>  </semantics>  <mrow>  <mi> ν </mi>  <mo> + </mo>  <mn> 1 </mn>  </mrow>  </msub>  <mo> ( </mo>  <mi> z </mi>  <mo> ) </mo>  </mrow>  <mo> - </mo>  <mrow>  <msub>  <semantics>  <mi> P </mi>  <annotation encoding='Mathematica'> TagBox["P", LegendreP] </annotation>  </semantics>  <mrow>  <mi> ν </mi>  <mo> - </mo>  <mn> 1 </mn>  </mrow>  </msub>  <mo> ( </mo>  <mi> z </mi>  <mo> ) </mo>  </mrow>  </mrow>  <mo> ) </mo>  </mrow>  </mrow>  </mrow>  </mrow>  <annotation-xml encoding='MathML-Content'>  <apply>  <eq />  <apply>  <int />  <bvar>  <ci> z </ci>  </bvar>  <apply>  <times />  <apply>  <ln />  <apply>  <times />  <apply>  <plus />  <cn type='integer'> 1 </cn>  <ci> z </ci>  </apply>  <apply>  <power />  <apply>  <plus />  <cn type='integer'> 1 </cn>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> z </ci>  </apply>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <apply>  <ci> LegendreP </ci>  <ci> ν </ci>  <ci> z </ci>  </apply>  </apply>  </apply>  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 2 </cn>  <apply>  <ci> LegendreP </ci>  <ci> ν </ci>  <ci> z </ci>  </apply>  <apply>  <power />  <apply>  <plus />  <apply>  <power />  <ci> ν </ci>  <cn type='integer'> 2 </cn>  </apply>  <ci> ν </ci>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <apply>  <times />  <apply>  <times />  <cn type='integer'> 1 </cn>  <apply>  <power />  <apply>  <plus />  <apply>  <times />  <cn type='integer'> 2 </cn>  <ci> ν </ci>  </apply>  <cn type='integer'> 1 </cn>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  <apply>  <ln />  <apply>  <times />  <apply>  <plus />  <cn type='integer'> 1 </cn>  <ci> z </ci>  </apply>  <apply>  <power />  <apply>  <plus />  <cn type='integer'> 1 </cn>  <apply>  <times />  <cn type='integer'> -1 </cn>  <ci> z </ci>  </apply>  </apply>  <cn type='integer'> -1 </cn>  </apply>  </apply>  </apply>  <apply>  <plus />  <apply>  <ci> LegendreP </ci>  <apply>  <plus />  <ci> ν </ci>  <cn type='integer'> 1 </cn>  </apply>  <ci> z </ci>  </apply>  <apply>  <times />  <cn type='integer'> -1 </cn>  <apply>  <ci> LegendreP </ci>  <apply>  <plus />  <ci> ν </ci>  <cn type='integer'> -1 </cn>  </apply>  <ci> z </ci>  </apply>  </apply>  </apply>  </apply>  </apply>  </apply>  </annotation-xml>  </semantics>  </math> 
   
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  | Cell[BoxData[RowBox[List[RowBox[List["HoldPattern", "[", RowBox[List["\[Integral]", RowBox[List[RowBox[List[RowBox[List["Log", "[", FractionBox[RowBox[List["1", "+", "z_"]], RowBox[List["1", "-", "z_"]]], "]"]], " ", RowBox[List["LegendreP", "[", RowBox[List["\[Nu]_", ",", "z_"]], "]"]]]], RowBox[List["\[DifferentialD]", "z_"]]]]]], "]"]], "\[RuleDelayed]", RowBox[List[FractionBox[RowBox[List["2", " ", RowBox[List["LegendreP", "[", RowBox[List["\[Nu]", ",", "z"]], "]"]]]], RowBox[List["\[Nu]", "+", SuperscriptBox["\[Nu]", "2"]]]], "+", FractionBox[RowBox[List[RowBox[List["(", RowBox[List[RowBox[List["-", RowBox[List["LegendreP", "[", RowBox[List[RowBox[List[RowBox[List["-", "1"]], "+", "\[Nu]"]], ",", "z"]], "]"]]]], "+", RowBox[List["LegendreP", "[", RowBox[List[RowBox[List["1", "+", "\[Nu]"]], ",", "z"]], "]"]]]], ")"]], " ", RowBox[List["Log", "[", FractionBox[RowBox[List["1", "+", "z"]], RowBox[List["1", "-", "z"]]], "]"]]]], RowBox[List["1", "+", RowBox[List["2", " ", "\[Nu]"]]]]]]]]]]]  |  
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   Date Added to functions.wolfram.com (modification date)
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| LegendreP[n,z] |  | LegendreP[n,mu,2,z] |  | LegendreP[nu,mu,z] |  | LegendreP[nu,mu,2,z] |  | LegendreP[nu,mu,3,z] |  |   |  
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