10.1例题 证明整数m<n,有 x"P(xdx=0 证明 x"(x)h=1 x"2(1-x2) 2 n X -m x 2 nd dx (1-x2) dx10.1例题 1. 证明整数 m n ,有 ( ) 0 1 1 x P x dx n m 证明: l n n m n n m x dx d x n x P x dx (1 ) 2 ! 1 ( ) 2 1 1 1 1 [ (1 ) (1 ) ] 2 ! 1 2 1 1 1 1 1 1 1 2 1 1 l n n l m n n m n x dx d x m x dx d x n l n n m n x dx d x n m (1 ) 2 ! 2 1 1 1 1 1