a feasible solution to the lpp
|
Basic Feasible Solutions
A feasible solution is basic feasible if it is not the average of two other feasible solutions If the feasibility region U for a LP is bounded and non-empty then there exists an optimal solution that is also basic feasible If an LP has a basic feasible solution and an optimum solution then there exists an optimal solution that is also basic |
|
Finding feasible solutions to a LP
In all the examples we have seen until now there was an “easy” initial basic feasible solution: put the slack variables on the left hand side How-ever this is not always the case especially for minimization problems or problems with equality constraints in the original model Consider the following simple LP minimize x s t x ≥ 5 x ≥ 0 |
When is a feasible solution to an LPP an optimal solution?
A feasible solution to an LPP with a maximization problem becomes an optimal solution when the objective function value is the largest (maximum). Similarly, a feasible solution to an LPP with a minimization problem becomes an optimal solution when the objective function value is the least (minimum).
Is the feasible region of a LPP convex?
It's easy to see that the feasible region of a LPP is convex. It's not always compact, and some LPP indeed have no solution despite having a nonempty feasible region. The linear objective function is clearly convex. If it is minimized instead of maximized, this can be reformulated as maximizing the negative objective function.
What is a basic feasible solution?
In the theory of linear programming, a basic feasible solution ( BFS) is a solution with a minimal set of non-zero variables. Geometrically, each BFS corresponds to a vertex of the polyhedron of feasible solutions. If there exists an optimal solution, then there exists an optimal BFS.
What is a feasible solution to a linear programming problem?
A feasible solution to the linear programming problem should satisfy the constraints and non-negativity restrictions. A feasible solution to an LPP with a maximization problem becomes an optimal solution when the objective function value is the largest (maximum).
Basic Feasible Solutions in LPP Degenerate Solutions of LPP Non Degenerate Solutions of LPP
Basic Solution in LPP Basic Feasible Solution Basic & Non-Basic variables Linear Programming
Types of solution in LPPBasicMultiple solutionUnboundedInfeasibleGTUSpecial case of LP problem
|
LECTURE NOTES ON LINEAR PROGRAMMING Pre-requisites
corresponds to an extreme point of the convex set of all feasible solutions. Fundamental Theorem of L.P.P.(statement only). Reduction of a feasible solution to |
|
Let to be a basic feasible solution to the LPP. : Maximize Z = cx
ie. Then for any feasible solution & to (1) and any feasible solution w to (i)) CX ≤ DTW le In ≤ZW. Proof- bet && w be any feasible solutions to the. |
|
Linear programming 1 Basics
17 Mar 2015 The set of feasible solutions is called the feasible space or feasible region. A feasible solution is optimal if its objective function value is ... |
|
The Graphical Simplex Method: An Example
A pair of specific values for (x1x2) is said to be a feasible solution if it satisfies all the constraints. (x1 |
|
Lecture 12 1 Finding an initial basic feasible solution
2 Oct 2014 Then there are no feasible solutions for the original LP i.e. |
|
Definition of a Linear Program
feasible solutions. Definition: An optimal solution to a linear program is the feasible solution with the largest objective function value (for a |
|
Degeneracy in Simplex Method A basic feasible solution of a
Again while solving LPP the situation may arise in which there is a tie between two or more basic variables for leaving the basis i.e minimum ratio to identify |
|
An alternative of converting feasible solution into basic feasible
For solving a linear programming problem there are various criterion to check whether a solution (s) to a LPP exists or not [6]. Definition: A feasible |
|
Module 4: Transportation Problem and Assignment problem
Transportation problem is a special kind of Linear Programming Problem (LPP) The steps for obtaining an optimal solution of an assignment problem are as ... |
|
UNIT – I – Introduction to OR – SMT1504
Solution: An LPP possesses a pseudo-optimal solution if at least one artificial variable is in the basis at positive level even though the optimality conditions |
|
LECTURE NOTES ON LINEAR PROGRAMMING Pre-requisites
corresponds to an extreme point of the convex set of all feasible solutions. Fundamental Theorem of L.P.P.(statement only). Reduction of a feasible solution to |
|
UNIT – I – Introduction to OR – SMT1504
Solution: An LPP possesses a pseudo-optimal solution if at least one artificial variable is in the basis at positive level even though the optimality conditions |
|
Appendix: Objective Type Questions
A LPP in standard form has m constraints and n variables. The number of basic feasible solutions will be. (a) C:J (b) :::; (~). (c) 2 (~). (d) none of these |
|
Definition of a Linear Program
Definition: A linear programming problem (LP) is an optimization prob- Definition: An optimal solution to a linear program is the feasible solution. |
|
Chapter 1
Linear Programming - II. (1) The region of feasible solution in LPP graphical method is called ____. (a) Infeasible region. (b) Unbounded region. |
|
Finding feasible solutions to a LP
Finding feasible solutions to a LP. In all the examples we have seen until now there was an “easy” initial basic feasible solution: put the slack variables |
|
An alternative of converting feasible solution into basic feasible
feasible solution of linear programming problem Definition: A Basic Feasible solution (BFS) to LPP is a FS in which at most m variables out of n ... |
|
Multiple Choice Questions OPERATIONS RESEARCH
What refers to Linear Programming that includes an evaluation of relative risks and If the feasible region of a LPP is empty the solution is ... |
|
The Graphical Simplex Method: An Example
A pair of specific values for (x1x2) is said to be a feasible solution if it satisfies all the constraints. (x1 |
|
LINEAR PROGRAMMING
12-Jan-2010 for an LPP represent feasible solutions. ... Theorem 2 Let R be the feasible region for a LPP and let Z = ax + by be the objective function. |
|
A1 LINEAR PROGRAMMING AND OPTIMAL SOLUTIONS A2
called a feasible solution to the linear programming problem A feasible solution that minimizes the objective function is called an optimal solution A 2 BASIS |
|
Finding feasible solutions to a LP
In all the examples we have seen until now, there was an “easy” initial basic feasible solution: put the slack variables on the left hand side How- ever, this is not |
|
LECTURE NOTES ON LINEAR PROGRAMMING Pre-requisites
Feasible solution to a L P P: A set of values of the variables, which satisfy all the constraints and all the non-negative restrictions of the variables, is known as the feasible solution (F S ) to the L P P There are two ways of solving a linear programming problem: (1) Geometrical method and (2) Algebraic method |
|
“MCQ on Linear Programming Problem”
A) Unique optimum solution B) unbounded optimum solution C) no feasible solution D) Infinite number of optimum solutions 6 A feasible solution of LPP |
|
LPP (Simplex Method) - Patna UNIVERSITY
A basic feasible solution to an L P P must correspond to an extreme point of the set of all feasible solutions and conversely Proof Let the L P P be : Maximize |
|
Solving Linear Programs - MIT
simplex method, proceeds by moving from one feasible solution to another, limited and restrictive; as we will see later, however, any linear programming |
|
Multiple Choice Questions (MCQs)
variables); (4 – Constraints); (5 – less than); (6 – Constraints)] Chapter 3 Linear Programming - II (1) The region of feasible solution in LPP graphical method is |
|
Feasible solution
THEOREM: For a feasible linear program in its standard form, the optimum value of the objective over its nonempty feasible region is (a) either unbounded or (b) |
|
Description of the Optimal Solution Set of the Linear Programming
These problems are solved as follows We define the normal form of an optimal basic solution and propose to consider the LPP solved when its solution is in the |
