Return to the knapsack problem of Exercise 12-29. (a) Explain why LP relaxation optimal solutions can be
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Return to the knapsack problem of Exercise 12-29.
(a) Explain why LP relaxation optimal solutions can be rounded to integer-feasible solutions by setting xn jd j=. (b) Repeat the branch and bound computations of Exercise 12-29, this time rounding up each relaxation solution in this way to produce earlier incumbent solutions. (c) Comment on the computational savings with rounding.
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