IF ` A=[(1,1,0),(2,1,5),(1,2,1)],`then `a_(11) A_(21) +a_(12)A_(22)+a_(13)A_(23)` =

IF A=[(1,1,0),(2,1,5),(1,2,1)], then a_(11) A_(21) +a_(12)+a_(12)A_(22)+a_(13)A_(23) =

If A=[(1,2,1),(3,2,3),(2,1,2)] , then a_(11) A_(11)+a_(21) A_(21)+a_(31) A_(31)=

If A=[(1,2,1),(3,2,3),(2,1,2)] , then a_(11) A_(11)+a_(21) A_(21)+a_(31) A_(31)=

If A= |(3,2,-1),(1,0,2),(-2,1,2)| Prove that (i) a_(11)A_(11)+a_(12)A_(12)+a_(13)A_(13)=det(A) (ii) a_(21)A_(11)+a_(22)A_(12)+a_(23)A_(13)=0

Find minors and cofactors of the elements of the determinant |{:(2,-3,5),(6,0,4),(1,5,-7):}| and verify that a_(11)A_(31)+a_(12)A_(32)+a_(13)A_(33)=0

If A=[[a_(11), a_(12), a_(13)], [a_(21), a_(22), a_(23)], [a_(31), a_(32), a_(33)]] and A_(ij) denote the cofactor of element a_(ij) , then a_(11)A_(21)+a_(12)A_(22)+a_(13)A_(23)=

If A=[[a_(11), a_(12), a_(13)], [a_(21), a_(22), a_(23)], [a_(31), a_(32), a_(33)]] and a_(ij) denote the cofactor of element A_(ij) , then a_(11)A_(11)+a_(12)A_(12)+a_(13)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

If Delta=|[a_(11),a_(12),a_(13)],[a_(21),a_(22),a_(23)],[a_(31),a_(32),a_(33)]| and A_(i j) is cofactors of a_(i j) , then value of Delta is given by A. a_(11)A_(31)+a_(12)A_(32)+a_(13)A_(33) B. a_(11)A_(11)+a_(12)A_(21)+a_(13)A_(31) C. a_(21)A_(11) + a_(22)A_(12) + a_(23)A_(13) D. a_(11)A_(11) + a_(21)A_(21) + a_(31)A_(31)