B= (} (a)_(14)& (a)_(13)& (a)_(12)& (a)_(11) (a)_(21)& (a)_(23)& (a)_(22)& (a)_(21) (a)_(34)& (a)_(33)& (a)_(32) .-|||-P1= (} 0& 0& 0& 1 0& 1& 0& 0 0& 0& 1& 0 1& 0& 0& 0 ) . 其中A可逆,则 -1= ()

.如果行列式 D= |} (a)_(11)& (a)_(12)& (a)_(13) (a)_(21)& (a)_(22)& (a)_(23) (a)_(31)

9.|}a_(11)&a_(12)&a_(13)a_(21)&a_(22)&a_(23)a_(31)&a_(32)&am

设3阶行列式|a_(11) & a_(12) & a_(13) a_(21) & a_(22) & a_(23) a_(31) & a_(32) & a_(

& a_(1n) a_(21) & a_(22) & ... & a_(2n) vdots & vdots &

& a_(1n) a_(21) & a_(22) & ... & a_(2n) vdots & vdots &

12 利用SPSS描述下列数据 12.82 & 13.62 & 13.87 & 14.03 & 14.11 & 14

2.已知A=}1&1&34&3&21&2&5，B=}1&1&-12&1&01&a

6.(1)设A=(}4&1&-22&2&13&1&-1),求X使AX=B;6.(1)设$A=\left(\beg

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