Crey | A square matrix A = [aᵢⱼ]ₙₓₙ is called a diagonal matrix if aᵢⱼ = 0 for i = j, i < j, i > j, i ≠ j

Question

A square matrix A = [aᵢⱼ]ₙₓₙ is called a diagonal matrix if aᵢⱼ = 0 for

Options :

i = j
i < j
i > j
i ≠ j

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