1. a. Show that this model has an unbounded solution by Big M Method.     b. What can be changed to have a bounded solution for this model? Explain by solving it.  Max Z= 3x1 + 6x2      s.to 3x1 + 4x2  ≥ 12 -2x1+ x2  ≤ 4 x1, x2 ≥ 0

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