勒让德多项式最小二乘性质：证明/(/int_{-1}^{1}P^2 dx/)/(/le/)/(/int_{-1}^{1}Q^2 dx/)
The statement is: For any polynomial /(Q_n(x)/) with leading coefficient 1 in the space /(H_n/), and the Legendre polynomial /(P(x)/) with leading coefficient 1, we have /(/int_{-1}^{1}P^2 dx/)/(/le/)/(/int_{-1}^{1}Q^2 dx/).
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