Question: In Example 3.4-1, identify the starting tableau for each of the following (independent) cases, and develop the associated z-row after substituting out all the artificial

In Example 3.4-1, identify the starting tableau for each of the following (independent) cases, and develop the associated z-row after substituting out all the artificial variables:
(a) The third constraint is X1 + 2X2 ≥ 4.
(b) The second constraint is 4X1 + 3X2 ≤ 6.
(c) The second constraint is 4X1 + 3X2 = 6.
(d) The objective function is to maximize z = 4x1 + x2.

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