Problems: 1 -1 2 1 -1 1 Let, A = 1 3 -1 -2 1 4 -1 3 3 -1 -5 1 -6 | a. Find a 5x5 matrix B such that AB = 0, where 0 is the 4x5 zero matrix. %3D b Suppose C is a 5x5 matrix such that AC = 0. Prove that rank(C) < 2.

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