If A is a diagonal matrix of non-positive entries and order 3 such that `A^2=I ,`then

If A is a non-diagonal involutory matrix, then

If A is a non- singular square matrix of the order 3xx3 such that A^2=3A then (A) -3 (B) 3 (C) 9 (D) 27

If A is a non singular square matrix of order 3 such that A^(2)=3A , then the value of |A| is

If A is a non-singular square matrix of order 3 such that A^2 = 3A, then value of |A| is A) (-3) B) 3 C) 9 D) 27

If A is a square matrix of order 3 and I is an ldentity matrix of order 3 such that A^(3) - 2A^(2) - A + 2l =0, then A is equal to

If A=[a_(i j)] is a square matrix of even order such that a_(i j)=i^2-j^2 , then (a) A is a skew-symmetric matrix and |A|=0 (b) A is symmetric matrix and |A| is a square (c) A is symmetric matrix and |A|=0 (d) none of these

Let M be a 2xx2 symmetric matrix with integer entries. Then M is invertible if The first column of M is the transpose of the second row of M The second row of M is the transpose of the first column of M M is a diagonal matrix with non-zero entries in the main diagonal The product of entries in the main diagonal of M is not the square of an integer

Let M be a 2xx2 symmetric matrix with integer entries. Then M is invertible if a. The first column of M is the transpose of the second row of M b. The second row of M is the transpose of the first column of M c. M is a diagonal matrix with non-zero entries in the main diagonal d. The product of entries in the main diagonal of M is not the square of an integer

Let A and B are two non - singular matrices of order 3 such that A+B=2I and A^(-1)+B^(-1)=3I , then AB is equal to (where, I is the identity matrix of order 3)

If A is a diagonal matrix of order 3xx3 is commutative with every square matrix of order 3xx3 under multiplication and trace (A)=12, then find |A|