Maximize 5000 X1 + 7000X2 + 9000X3 Subject to: X1 + X2 + X3 ≤ 2 Constraint 1 -X1 + X2 ≤ 0 Constraint 2 25,000 X1 + 32,000 X2 + 29,000 X3 ≤ 62,000 (budget limit) 16 X1 + 14 X2 + 19 X3 ≤ 36 (resource limitation) all variables = 0 or 1 where X1 = 1 if alternative 1 is selected, 0 otherwise X2 = 1 if alternative 2 is selected, 0 otherwise X3 = 1 if alternative 3 is selected, 0 otherwise Solution x1 = 1, x2 = 0, x3 = 1, objective value = 14,000.   What is the meaning of Constraint 2? 1) None of the provided options. 2) Both alternatives 1 and 2 must be selected. 3) Either alternative 1 or alternative 2 must be selected. 4) If alternative 2 is selected, alternative 1 must also be selected. 5) No more than one alternative may be selected.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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A company has decided to use 0−1 integer programming to help make some investment decisions. There are three possible investment alternatives from which to choose, but if it is decided that a particular alternative is to be selected, the entire cost of that alternative will be incurred (i.e., it is impossible to build one-half of a factory).

The integer programming model is as follows:

Maximize 5000 X1 + 7000X2 + 9000X3

Subject to: X1 + X2 + X3 ≤ 2 Constraint 1

-X1 + X2 ≤ 0 Constraint 2

25,000 X1 + 32,000 X2 + 29,000 X3 ≤ 62,000 (budget limit)

16 X1 + 14 X2 + 19 X3 ≤ 36 (resource limitation)

all variables = 0 or 1

where X1 = 1 if alternative 1 is selected, 0 otherwise

X2 = 1 if alternative 2 is selected, 0 otherwise

X3 = 1 if alternative 3 is selected, 0 otherwise

Solution x1 = 1, x2 = 0, x3 = 1, objective value = 14,000.

 

What is the meaning of Constraint 2?

1) None of the provided options.
2) Both alternatives 1 and 2 must be selected.
3) Either alternative 1 or alternative 2 must be selected.
4) If alternative 2 is selected, alternative 1 must also be selected.
5) No more than one alternative may be selected.

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