设3阶行列式|a_(11) & a_(12) & a_(13) a_(21) & a_(22) & a_(23) a_(31) & a_(32) & a_(
设行列式|({a)_(11)}&({a)_(12)}{a)_(21)}&({a)_(22)}|等于( )A. m+nB. -(m+n)C. n-mD. m-n
设行列式|({a)_(11)}&({a)_(12)}{a)_(21)}&({a)_(22)}|等于A. m+nB. -(m+n)C. n-mD. m-n
B= (} (a)_(14)& (a)_(13)& (a)_(12)& (a)_(11) (a)_(21)& (a)_(23)& (a)_(22)& (a)_
9.|}a_(11)&a_(12)&a_(13)a_(21)&a_(22)&a_(23)a_(31)&a_(32)&am
行列式}&&1&2&5&&的值为()4. (2.5分) 行列式$\begin{vmatrix}&&1\\&
行列式 } 1 & 2 & 1 & 4 0 & -1 & 2 & 1 0 & 0 & 2 &
2.6 已知4阶行列式如下D=}3&-5&2&11&1&0&-5-1&3&1&32&am
把下列行列式按对角线法则展开.| } 1 & 1 & 1 a & b & c ({a)^2} & ({b)^2} &
行列式det}1&0&0&00&2&0&00&0&1&00&0&0&am