10k 12 a11+ka31 12+32 2) 01 00 1 A22 032 431 M32 （b bi3 b2 (3) bis b2 b31 b3311 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     =      