Linear Programming Terminology

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Questions and Answers

A constraint is a mathematical expression that represents the objective of a linear programming model.

False (B)

The problem formulation is the translation of a mathematical model into a verbal statement.

False (B)

A decision variable is a controllable output for a linear programming model.

False (B)

Nonnegativity constraints require all variables to be negative.

<p>False (B)</p> Signup and view all the answers

A linear programming model is a mathematical model with a nonlinear objective function, a set of nonlinear constraints, and negative variables.

<p>False (B)</p> Signup and view all the answers

A linear function is a mathematical expression in which the variables appear in separate terms and are raised to the second power.

<p>False (B)</p> Signup and view all the answers

A feasible solution is a solution that does not satisfy all the constraints.

<p>False (B)</p> Signup and view all the answers

The feasible region is the set of all infeasible solutions.

<p>False (B)</p> Signup and view all the answers

A slack variable is a variable added to the right-hand side of a less-than-or-equal-to constraint to convert the constraint into an inequality.

<p>False (B)</p> Signup and view all the answers

The standard form of a linear program is a linear program in which all the constraints are written as inequalities.

<p>False (B)</p> Signup and view all the answers

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Study Notes

Linear Programming Terminology

  • A constraint is an equation or inequality that rules out certain combinations of decision variables as feasible solutions.

Problem Formulation

  • Problem formulation is the process of translating a verbal statement of a problem into a mathematical statement, resulting in a mathematical model.

Decision Variables and Nonnegativity Constraints

  • A decision variable is a controllable input for a linear programming model.
  • Nonnegativity constraints require all variables to be nonnegative.

Linear Programming Models

  • A linear programming model is a mathematical model with a linear objective function, a set of linear constraints, and nonnegative variables.
  • A linear function is a mathematical expression where variables appear in separate terms and are raised to the first power.
  • A linear program is another term for a linear programming model.

Feasible Solutions and Regions

  • A feasible solution is a solution that satisfies all the constraints.
  • The feasible region is the set of all feasible solutions.

Slack Variables and Standard Form

  • A slack variable is added to the left-hand side of a less-than-or-equal-to constraint to convert it into an equality, representing the amount of unused resource.
  • Standard form is a linear program where all constraints are written as equalities, with the optimal solution being the same as the original linear program.

Redundant Constraints and Extreme Points

  • A redundant constraint does not affect the feasible region and can be removed without affecting the feasible region.
  • An extreme point is a feasible solution point occurring at the vertices or “corners” of the feasible region, determined by the intersection of the constraint lines in two-variable problems.

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