Simplex Tutor 1.1

the author of this app says:

The Simplex Tutor helps you solve simple linear programming problems. Arithmetic for pivoting can be tedious and mistakes can be hard to catch, so use the tutor to check your work.

Hints will guide you to a solution
Tutor completes pivots for you
Exact answers are shown as fractions
Review linear programming, with examples
Review simplex method, with examples
32 sample problem templates included
Enter your own problems
Enter data as fractions or decimals
Custom keyboard for easy data entry
Export matrices as HTML or CVS
Save matrices as pictures
Work problems with up to six constraints and six initial variables

If you are stuck and not sure how to proceed with a problem, you can request a hint guiding you to the solution. The more hints you ask for, the more guidance you will receive. Eventually the tutor will tell you a correct location to pivot on if the problem is solvable, or it will tell you that there is no solution. In this way the rules of the simplex method are continually reinforced and soon you will not need to ask for hints.

For help solving two dimensional linear programming problems graphically or to plot linear inequalities, see the Linear Program Plotter.

For practice with row operations, the Gauss-Jordan method, or finding matrix inverses, see the Row Operations Tutor.