Functional variables are the only variables included in the set of non-negativity constraints of a goal programming model.

Name: Functional variables are the only variables included in the set of non-negativity constraints of a goal programming model.
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Quizplus · Accepted Answer

In goal programming models, non-negativity constraints can apply to both functional variables and slack, surplus, or artificial variables introduced to measure deviations from goals, not just functional variables.

Functional Variables Are the Only Variables Included in the Set