Consider `A=[(a_(11),a_(12)),(a_(21),a_(22))]` and `B=[(1,1),(2,1)]` such that `AB=BA.` then the value of `(a_(12))/(a_(21))+(a_(11))/(a_(22))` is

If A=[(a_(11),a_(12)),(a_(21),a_(22))] , then minor of a_(11) (i. e., M_(11)) is

If A=[(a_(11),a_(12)),(a_(21),a_(22))] , then minor of a_(11) (i. e., M_(11)) is

If A=[[a_(11),a_(12)],[a_(21),a_(22)]] is non - singular, find A^(-1) .

A=([5,1,2],[6,3,4]) find the value of a_(12)+a_(13)-a_(22)"

Consider an A.P*a_(1),a_(2),a_(3),.... such that a_(3)+a_(5)+a_(8)=11 and a_(4)+a_(2)=-2 then the value of a_(1)+a_(6)+a_(7) is....

If |A| = |(a_(11), a_(12), a_(13)),(a_(21),a_(22),a_(23)),(a_(31),a_(32),a_(33))| = 6 , then write down the value of |A^(-1)| .

If A=[(cos theta,sin theta,0),(-sin theta,cos theta,0),(0,0,1)] , where A_(11), A_(12), A_(13) are co-factores of a_(11), a_(12), a_(13) respectively , then the value of a_(11)A_(11)+a_(12)A_(12)+a_(13)=

If A=[[3,4,5],[1,6,7],[2,8,3]] ,then the value of a_(21)A_(11)+a_(22)A_(12)+a_(23)A_(13) is equal to