题目设A为3阶矩阵,(A)^*为A的伴随矩阵,|A|=3,则|(A)^*-(2A())^-1|= .设$A$为$3$阶矩阵,${A}^{*}$为$A$的伴随矩阵,$|A|=3$,则$|{A}^{*}-(2A{)}^{-1}|=$ .题目解答答案