A是n阶方阵,|A|=3.则|(A * ) * |= ( )
【正确答案】 A
【答案解析】解析:|A|=3,A可逆 (A * )(A * )=|A * |E,(A * )=|A * |(A * ) -1 =|A * =|A| n-2 A,|(A * ) * |=||A| n-2 A|=|A| (n-2)n |A|=