If `[[a,b],[c,d]]` is invertible,then

If A= [[a,b],[c,d]] is invertible,then A^(-1)

If A=[a b c x y z p q r],B[q-b y-p a-x r-c z] and if A is invertible, then which of the following is not true? |A|=|B| |A|=-|B| |a d j A|=|a d jB| A is invertible if and only if B is invertible

If A=[[a, b],[ c ,d]] , then a d j\ A is [[-d,-b],[-c, a]] (b) [[d,-b],[-c ,a]] (c) [[d, b],[ c, a]] (d) [[d, c],[ b ,a]]

If A is an invertible matrix, then which of the following is not true (A^2)^-1=(A^(-1))^2 (b) |A^(-1)|=|A|^(-1) (c) (A^T)^(-1)=(A^(-1))^T (d) |A|!=0

If [(1,a,2),(1,2,5),(2,1,1)] is non invertible then a= (A) 2 (B) 1 (C) 0 (D) -1

If A is invertible then which of the following is not true? (A) A^-1=|A|^-1 (B) (A^\')^-1=(A^-1)\' (C) (A^2)^-1=(A^-1)^2 (D) none of these

If A is an invertible matrix then det(A^-1) is equal to (A) 1 (B) 1/|A| (C) |A| (D) none of these

If A is an invertible matrix,tehn (adj.A)^(-1) is equal to adj.(A^(-1)) b.(A)/(det.A) c.A d.(det A)A

If A is an invertible matrix then which of the following are true? (A) A!=0 (B) |A|!=0 (C) adjA!=0 (D) A^-1=|A|adjA

If A and B are invertible matrices, then which of the following is not correct ?