Lets consider a linnear programming as follows
Maximize (x + 3y)
Subject to
x + y ≤ 4
x + y ≤ 1
x - y ≥ 2
x, y ≥ 0
The feasible region has the form
That is, the set of feasible set is the empty set. There are not any point satisfying all restrictions, so we have an incompatibility restrictions problem.
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