接上 j X(0)=2n=±1,±3 1兀 2E A n=±1,±3 X(mO0)=e2,n=±1,+3,+5 E n≠0 X(noo)=12 Inl h=0 ≠0 0 n=0X第7页 jh jh 接上 0 ( ) , 1, 3, jE X n n n   − = =   2 j j e  − − =2 0 ( ) , 1, 3, 5, 2 j An X n e n   − = =    0 , 0 ( ) 2 0 , 0 An E n X n n n    =  = =   , 0 2 0 , 0 n nn   −  =  = 2 , 1, 3, n E A n n = =  