Question 2 over a field K. Let Mn(K) denotes the vector space of n x n matrices (b) Let A be given by Compute the rank of A as ⚫ an element of M2(R) ⚫ an element of M2 (F3) • an element of M2(F2) A = [1 2 = 0-2 2 0 0 1 −1 1

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