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

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

If A=[12221-2a2b] is a matrix satisfying AA^(T)=9I_(3), then find the values of a and b

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

If matrix [{:(0,a,3),(2,b,-1),(c,1,0):}] is skew-symmetric matrix, then find the values of a,b and c,

Matrix A=[(0,2b,-2),(3,1,3),(3a,3,-1)] is given to be symmetric, find the values of a and b

If A =[{:(3,-3,4),(2,-3,4),(0,-1,1):}] and B is the adjoint of A, find the value of |AB+2I| ,where l is the identity matrix of order 3.

If A=[(1,2,3),(2,3,1)] and B=[(3,-1,3),(-1,0,2)], then find 2A-B.

Matrix A[(0,2b,-2),(3,1,3),(3a,3,-1)] is gives to be symmetric, find values of 'a' and 'h'

3.If a+b=6 then find the value of 1/2a+1/2b