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The Legendre polynomials $P_n$, $n\geq 0$, can be defined as the system of orthogonal polynomials with respect to the inner product (3) such that $\deg P_n=n$ and $P_n(1)=1$.
Parameters
$n$
— integer ($n \geq 0$)
Formulas
(1)
$P_0(x) = 1$, $P_1(x) = x$, and $(n+1)P_{n+1}(x) = (2n+1)_x P_n(x) - n P_{n-1}(x)$ for $n\geq 1$ (Bonnet's recursion formula).