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Given the Following All-Integer Linear Program: ​

Question 48

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Given the following all-integer linear program: Given the following all-integer linear program:   ​  a.​ Solve the problem as a linear program ignoring the integer constraints.Show that the optimal solution to the linear program gives fractional values for both x<sub>1</sub> and x<sub>2</sub>. b.​ What solution is obtained by rounding fractions greater than or equal to 1/2 to the next larger number? Show that this solution is not a feasible solution. c.What is the solution obtained by rounding down all fractions? Is it feasible? d.​ ​ Enumerate all points in the linear programming feasible region in which both x<sub>1</sub> and x<sub>2</sub> are integers,and show that the feasible solution obtained in part (c)is not optimal and that in fact the optimal integer is not obtained by any form of rounding.
a.​
Solve the problem as a linear program ignoring the integer constraints.Show that the optimal solution to the linear program gives fractional values for both x1 and x2.
b.​
What solution is obtained by rounding fractions greater than or equal to 1/2 to the next larger number? Show that this solution is not a feasible solution.
c.What is the solution obtained by rounding down all fractions? Is it feasible?
d.​

Enumerate all points in the linear programming feasible region in which both x1 and x2 are integers,and show that the feasible solution obtained in part (c)is not optimal and that in fact the optimal integer is not obtained by any form of rounding.

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