\[A = \left[ {\begin{array}{*{20}{c}} 2&2&3\\ 2&3&1\\ 3&4&4 \end{array}} \right]\],且`\BA = A + B`,则矩阵`\B=` ( )
举一反三
- 求解下列矩阵对策,其中赢得矩阵 [tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex] 为$\left[\begin{array}{llll}2 & 7 & 2 & 1 \\ 2 & 2 & 3 & 4 \\ 3 & 5 & 4 & 4 \\ 2 & 3 & 1 & 6\end{array}\right]$
- 设 \( A \)是 \( 3 \times 3 \)矩阵, \( B \)是 \( 4 \times 4 \)矩阵,且\( \left| A \right| = 1,\,\left| B \right| = - 2, \) 则\( \left| {\left| B \right|A} \right| = \) ______
- 设`\A`是3阶矩阵,将`\A`的第1列与第2列交换得到`\B`,再把`\B`的第2列加到第1列得`\C`,则满足`\AP=C`的可逆矩阵`\P` ( ) A: \[\left[ {\begin{array}{*{20}{c}}1&1&0\\1&{\rm{1}}&{\rm{1}}\\0&0&1\end{array}} \right]\] B: \[\left[ {\begin{array}{*{20}{c}}1&1&0\\1&0&0\\{\rm{1}}&0&1\end{array}} \right]\] C: \[\left[ {\begin{array}{*{20}{c}}1&{\rm{0}}&0\\1&{\rm{1}}&0\\0&0&1\end{array}} \right]\] D: \[\left[ {\begin{array}{*{20}{c}}1&1&0\\1&0&0\\0&0&1\end{array}} \right]\]
- 设方程组\[\left\{ {\begin{array}{*{20}{c}} {\lambda {x_1} + {x_2} + {x_3} = \lambda - 3}\\ {{x_1} + \lambda {x_2} + {x_3} = - 2}\\ {{x_1} + {x_2} + \lambda {x_3} = - 2} \end{array}} \right.\]若`\lambda = 1`,则( )
- 对于矩阵\[ A = \left[ {\begin{array}{*20{c}} 1&2\\ 0&1 \end{array}} \right] 与矩阵 B = \left[ {\begin{array}{*20{c}} 1&2\\ 2&1 \end{array}} \right], \]则` A `与` B `( ) </p></p>