表6-28中 In =2∑xx…=∑∑xm/bn j=1l=1 j=1l=1 x,=∑∑xx,=∑∑xm/am i=1l=1 i=1l=1 x…=2∑∑xmx=∑∑∑ L Xul/abn 上一张下一张主页退出表6-28中     = = = = = = = = = = = = a i b j n l ijl a i n l j ijl b j n l i ijl n l i j ijl x x x x x x x x 1 1 1 1 1 1 1 1 . ... . . ..     = = = = = = = = = = = = a i b j n l ijl a i n l j ijl b j n l i ijl n l i j ijl x x abn x x an x x bn x x n 1 1 1 1 1 1 1 1 . ... / . . / .. / / 上一张 下一张 主 页 退 出