# What is lpSolve package?

## What is lpSolve package?

The lpSolve R package is the first implementation of an interface of lpsolve to R. It provides high-level functions for solving general linear/integer problems, assignment problems and transportation problems. The following link contains the version of the driver: lpSolve: Interface to Lp_solve v.

What is lpSolve IDE?

The LPSolve IDE (Integrated Development Interface) is a very user friendly Windows interface to the lpsolve API. All functionality of lpsolve can be accessed via a graphical and very user friendly application.

### What is lpSolve package in R?

The lpSolve R package allows to solve linear programming problems and get significant statistical information (i.e. sensitivity analysis) with just a few lines of code.

How do you solve a linear programming problem using graphical method?

The Graphical Method

1. Step 1: Formulate the LP (Linear programming) problem.
2. Step 2: Construct a graph and plot the constraint lines.
3. Step 3: Determine the valid side of each constraint line.
4. Step 4: Identify the feasible solution region.
5. Step 5: Plot the objective function on the graph.
6. Step 6: Find the optimum point.

#### Why do we need to use an LP solver?

Linear programming is used for obtaining the most optimal solution for a problem with given constraints. In linear programming, we formulate our real-life problem into a mathematical model. It involves an objective function, linear inequalities with subject to constraints.

How do you write a linear programming problem?

The process to formulate a Linear Programming problem

1. Identify the decision variables.
2. Write the objective function.
3. Mention the constraints.
4. Explicitly state the non-negativity restriction.

## How do you create a linear programming problem?

Steps to Linear Programming

1. Understand the problem.
2. Describe the objective.
3. Define the decision variables.
4. Write the objective function.
5. Describe the constraints.
6. Write the constraints in terms of the decision variables.