要使①式成立，只需取Q. = DoQ. = D.Q - AQ. = DQ = D, + AQ0Qk- AQk-1 = Dk即Q= D, + AQkQm-1 - AQm-2 = DnQm-1 = Dm-1 + AQm-2-AQm-1 +U. = DmU, = D.m+ AQm-1即可.同理可证②88.4矩阵的相似V§8.4 矩阵的相似 要使①式成立，只需取 0 0 1 0 1 1 1 2 1 1 0 k k k m m m m m Q D Q AQ D Q AQ D Q AQ D AQ U D − − − − −  =  − =    − =   − =  − + =  即 0 0 1 1 0 1 1 1 2 0 1 k k k m m m m m Q D Q D AQ Q D AQ Q D AQ U D AQ − − − − −  =  = +    = +   = +  = +  即可. 同理可证②