Electronic Proceedings of the Seventeenth Annual International Conference on Technology in Collegiate Mathematics

New Orleans, Louisiana, October 28-31, 2004

Paper C015

Simplex: Artificial Variables with TI-89 or Voyage 200

Hernan Rivera

Department of Mathematics an Computer Science
Texas Lutheran University
Seguin, TX 78155
Phone: (830) 372-6009

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In this paper we present a calculator implementation of the Big M and Two Phase methods used in linear programming problems in which artificial variables are present. In addition a procedure is presented that avoids artificial variables by using a combination of the regular and dual simplex methods.

Keyword(s): graphing calculators, linear programming, TI-89, Voyage 200