设4阶矩阵A=(aij)不可逆,a12的代数余子式A12不等于0,为矩阵A的列向量组
Ihavebeenstudyinghereforfouryears,bynextsummerI________.
In1991,whilet11eeconomiesofindustrializedcountriesmetaneconomic_____,theeconomiesofdevelopingcountriesweregrowingveryfast.
设A为3阶矩阵,|A|=3,*A为A伴随矩阵,若交换A的第1行与第2行得矩阵B,则|BA|=()
Sixtypercentoftelevisionviewerschosehimastheir_______actor.