第四章级数 历安毛子代枚大等 XIDIAN UNIVERSITY Series (2)zm=(-1)”+ n+ (3)n=(1+ -n 解9+ can eos(-名)+isin(-gxl 场论与复变函数Field Theory and Complex Variable Functions 10场论与复变函数 Field Theory and Complex Variable Functions 10 (3) (1 ) . 3 n n i z 3 3 1 z ( ) 2 2 2 n n n i 解: 3 (cos sin ) 2 6 6 n n i 3 [cos( ) sin( )] 2 6 6 n n n i ; 1 (2) ( 1) n i z n n 第四章 级数 Series