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Questions and Answers
A constraint is a mathematical expression that represents the objective of a linear programming model.
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.
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.
A decision variable is a controllable output for a linear programming model.
False (B)
Nonnegativity constraints require all variables to be negative.
Nonnegativity constraints require all variables to be negative.
A linear programming model is a mathematical model with a nonlinear objective function, a set of nonlinear constraints, and negative variables.
A linear programming model is a mathematical model with a nonlinear objective function, a set of nonlinear constraints, and negative variables.
A linear function is a mathematical expression in which the variables appear in separate terms and are raised to the second power.
A linear function is a mathematical expression in which the variables appear in separate terms and are raised to the second power.
A feasible solution is a solution that does not satisfy all the constraints.
A feasible solution is a solution that does not satisfy all the constraints.
The feasible region is the set of all infeasible solutions.
The feasible region is the set of all infeasible solutions.
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.
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.
The standard form of a linear program is a linear program in which all the constraints are written as inequalities.
The standard form of a linear program is a linear program in which all the constraints are written as inequalities.
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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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