10k 12 u1+ ha 1, 3 (2)010a21a2= 21 22 32 12 b3100)(b 13 13 12 (3)b21b2b23001=b1b23b2 32 bz3八010)(b,b,b 31 1515 11 12 21 22 31 32 1 0 (2) 0 1 0 0 0 1 k a a a a a a                11 31 12 32 21 22 31 32 a ka a a a a a a   + +   =       11 12 13 21 22 23 31 32 33 1 0 0 (3) 0 0 1 0 1 0 b b b b b b b b b                11 13 12 21 23 22 31 33 32 b b b b b b b b b     =      