Prove or disprove: The vectors A_1 = [1 1 0 0] , A_2 = [1 2 1 1], and A_3 = [0 −1 0 −1] are linearly independent in M_2(R).

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Q: 3542+9899

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Q: E1

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Q: For sets A, B and C, prove that (A∩B) x C = (A x C)∩(B x C).

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