Question: Problem 1 Develop the B&B tree for each of the following problems. For convenience, always select x1 as the branching variable at node 0. *(a)

Problem 1 Develop the B&B tree for each of the following problems. For convenience, always select x1 as the branching variable at node 0. *(a) Maximizez = 31 + 2x2 subject to 2x1 + 5x2 5 18 4x1 + 212 5 18 X1, X2 2 0 and integer (b) Maximize z = 2x] + 3x2 subject to 7x1 + 512 = 36 4x1 + 9%2 5 35 x1, X2 20 and integer (c) Maximize z = 2x1 + 2x2 subject to 2x + 5x2 $ 27 6x1 + 5X2 5 16 X1, X2 2 0 and integer

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