1.

If matrix A=aij2×2, where aij=1, if i≠j0, if i=j, then A2 is equal to(a) I(b) A(c) O(d) −I

Answer» If matrix A=aij2×2, where aij=1, if ij0, if i=j, then A2 is equal to



(a) I

(b) A

(c) O

(d) −I


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