设A,B均是四阶矩阵|A|=2,|B|=2,则|(A^*B^(-1))^2*A^T|=
问题描述:
设A,B均是四阶矩阵|A|=2,|B|=2,则|(A^*B^(-1))^2*A^T|=
答
|(A^*B^(-1))^2*A^T|
= |A*B^-1|^2 * |A^T|
= |A*|^2 * |B^-1|^2 * |A|
= (|A|^3)^2 * (|B|^-1)^2 * |A|
= 2^6 * 2^-2 * 2
= 2^5
= 32.