热心网友
A*A^*=|A|*E (E 单位矩阵)=|A*A^*|=||A|*E|=|A|^3=|A|*|A^*|=|A^*|=|A|^2|A|=3*3*(-3)=-27 =|A^*|=3^6 =|1/3A^*|=(1/3)^3|A^*|=3^(-3)*3^6=27
A*A^*=|A|*E (E 单位矩阵)=|A*A^*|=||A|*E|=|A|^3=|A|*|A^*|=|A^*|=|A|^2|A|=3*3*(-3)=-27 =|A^*|=3^6 =|1/3A^*|=(1/3)^3|A^*|=3^(-3)*3^6=27