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DLMF:18.17.E1
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Formula:6439
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MaRDI QID
Q6439
Label: DLMF:18.17.E1
Digital Library of Mathematical Functions ID
18.17.E1
2
n
∫
0
x
(
1
-
y
)
α
(
1
+
y
)
β
P
n
(
α
,
β
)
(
y
)
d
y
=
P
n
-
1
(
α
+
1
,
β
+
1
)
(
0
)
-
(
1
-
x
)
α
+
1
(
1
+
x
)
β
+
1
P
n
-
1
(
α
+
1
,
β
+
1
)
(
x
)
.
2
𝑛
superscript
subscript
0
𝑥
superscript
1
𝑦
𝛼
superscript
1
𝑦
𝛽
Jacobi-polynomial-P
𝛼
𝛽
𝑛
𝑦
𝑦
Jacobi-polynomial-P
𝛼
1
𝛽
1
𝑛
1
0
superscript
1
𝑥
𝛼
1
superscript
1
𝑥
𝛽
1
Jacobi-polynomial-P
𝛼
1
𝛽
1
𝑛
1
𝑥
{\displaystyle{\displaystyle 2n\int_{0}^{x}(1-y)^{\alpha}(1+y)^{\beta}P^{(% \alpha,\beta)}_{n}\left(y\right)\mathrm{d}y=P^{(\alpha+1,\beta+1)}_{n-1}\left(% 0\right)-(1-x)^{\alpha+1}(1+x)^{\beta+1}P^{(\alpha+1,\beta+1)}_{n-1}\left(x% \right).}}
Constraint(s)
Symbols List
P
n
(
α
,
β
)
(
x
)
Jacobi-polynomial-P
𝛼
𝛽
𝑛
𝑥
{\displaystyle{\displaystyle P^{(\NVar{\alpha},\NVar{\beta})}_{\NVar{n}}\left(% \NVar{x}\right)}}
: Jacobi polynomial
d
x
𝑥
{\displaystyle{\displaystyle\mathrm{d}\NVar{x}}}
: differential of x
∫
{\displaystyle{\displaystyle\int}}
: integral
y
𝑦
{\displaystyle{\displaystyle y}}
: real variable
n
𝑛
{\displaystyle{\displaystyle n}}
: nonnegative integer
x
𝑥
{\displaystyle{\displaystyle x}}
: real variable
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