If A`[[1,2,2],[2,1,-2],[a,2,b]]` ia a matrix satisfying the equation A`A^T`=`9I`,where `I` is `3xx3 `matrix, then the ordered pair (a, b) is equal to

If A=[1 2 2 2 1-2a2b] is a matrix satisfying the equation AA^T=""9I , where I is 3xx3 identity matrix, then the ordered pair (a, b) is equal to : (1) (2,-1) (2) (-2,""1) (3) (2, 1) (4) (-2,-1)

if A=[(1,2,2),(2,1,-2),(a,2,b)] is a matrix satisfying A A'=9I_(3,) find the value of |a|+|b|.

{:A=[(1,2,2),(2,1,-2),(a,2,b)]:} is a matrix and AA^T=9I, then the ordered pair (a,b) is equal to

If A is a 3xx3 matrix such that |A|=-2 , then |-2A^(-1)| is equal to

If A=[(1 2 2)[, (2 1 -2),(a 2 b)] is a matrix satisfying A A^T=9I_3 , then find the values of a and b .

A skew symmetric matrix S satisfies the rotation S^(2) +I=0 ,where I is a unit matrix , Show that S S^T =I

Show that the matrix A=[2 3 1 2] satisfies the equation A^2-4A+I=0

if for a matrix A, A^2+I=O , where I is the identity matrix, then A equals

If A=[{:(1,0,-1),(2,1,3),(0,1, 1):}] then verify that A^(2)+A=A(A+I) , where I is 3xx3 unit matrix.