In Exercises 3 and 4, find the new B-1 from the given information. -1 :n 4. The current B-1 is 1 -1 2 1 0. 1 1 B-1 B-1 = %3D -1 3 1 -3 2 -1 2 4. and the pivotal column is given by 4. and X 4

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