π 【证明】令 δ=e2n i-s86-o 有， n+1 8=e2n=e2e2n=76 63n*1-j6 82m=1【证明】令 n j e 2 p d = ( ) Õ( ) Õ( ) = + + + - + = + + - - - = - = n k k n n n n k k n n s s s B s s 1 2 1 3 1 1 1 0 2 1 d d d d 有， d d p p p e e e j n j j n n j n = = = + + 2 2 2 1 1 d jd n = - 3 +1 1 2 = n d