BI x()sin wtdwt Msin wtdt M(cos a2 +cosa,) 2M A B N(A) 2M 2+1-(0)2+ 2Me (M-1) On2 m=1 4M N(A) 4M =   2 0 1 ( )sin 1 B x t wtdwt         = − + − = + =  − 0 2 0 2 2 1 1 ( ) 1 ( ) 2 (cos cos ) 2 sin 2 2 1 A e A M me M M wtdwt         A A j A B N A 1 1 ( ) = + ( 1) 2 ( 1 ( ) 1 ( ) 2 0 2 0 2 0 = − + − + M − A Me j A e A me A M   m =1 0 2 1 ( ) 4 ( ) A e A M N A = −  e0 = 0 A M N A  4 ( ) =