由雨雨正敦的矢量组 咸的矢量集合,叫做正 (3,4,5) 念矢量集 (0,0,2 (0,0,5)4 矢量的正没分解 (0,2,0) (3,4,0) [3,4,5,]=[2,0,0]+2[0,2,0]+ [0,0 2 2 2 X [2,0,0]+c2[0,2,0]=[2c1,2c2,0] e=1345]-[2,2a20=√3-2)2-(4-2)2-(6-03)* .由两两正交的矢量组 成的矢量集合,叫做正 交矢量集. *矢量的正交分解: 0 ,0 , 2 2 5 2 ,0 ,0 2 0 , 2 ,0 2 3 3 , 4 ,5 , [ 2 ,0 ,0 ] [ 0 ,2 ,0 ] [ 2 ,2 ,0 ] 1 2 1 2 x c c c c 2 2 2 2 1 2 1 e [3,4,5][2c ,2c ,0] (3 2c ) (4 2c ) (50) 0 (3,4,5) (0,0,5) (2,0,0) (0,2,0) (3,4,0) (0,0,2) 3 4 5