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Exercise 4.4. Consider the linear program minimize er subject to Ar > b. ZER Consider a particular problem with objective vector c = (-10, 3, 8, 2, -5, 6, 2)". Ata feasible point 1, the active constraint matrix is given by 5 1 0 -1 -2 7 -6 -2 3 0 0 -2 7 2-4 3 1 (a) Is I e vertex? If 2 is a vertex, is it degenerate or nondegenerate? Justify your answer. (b) Determine whether or not is optimal. Exercise 4.4. Consider the linear program minimize er subject to Ar > b. ZER Consider a particular problem with objective vector c = (-10, 3, 8, 2, -5, 6, 2)". Ata feasible point 1, the active constraint matrix is given by 5 1 0 -1 -2 7 -6 -2 3 0 0 -2 7 2-4 3 1 (a) Is I e vertex? If 2 is a vertex, is it degenerate or nondegenerate? Justify your answer. (b) Determine whether or not is optimal