alleryIf A = [[1,1],[1,1]], the determinant and rank:
Adet = 0, rank = 1
Bdet = 2, rank = 2
Cdet = 0, rank = 2
Ddet = 1, rank = 1
Answer & Solution
Correct answer: A. det = 0, rank = 1
det = 1·1 - 1·1 = 0. Both rows identical, so only 1 linearly independent row. Rank = 1.
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