(Solution) - Follow the instructions of Prob 12 7 2 for the following IP -(2025 Original AI-Free Solution)

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Follow the instructions of Prob. 12.7-2 for the following IP model:
Minimize Z = 2x1 + 3x2,
Subject to

And x1 ? 0, x2 ? 0 x1, x2 are integer.
(a) Solve this problem graphically.
(b) Use the MIP branch-and-bound algorithm presented in Sec. 12.7 to solve this problem by hand. For each subproblem, solve its LP relaxation graphically.
(c) Use the binary representation for integer variables to reformulate this problem as a BIP problem.
(d) Use the BIP branch-and-bound algorithm presented in Sec. 12.6 to solve the problem as formulated in part (c) interactively.