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Developer(s) Bernard Parisse, France
Stable release 1.1.1 / June 2014 (2014-06)
Written in C++
Operating system Windows, Mac OS X, Linux
Type Computer algebra system
License GNU GPL
Website www-fourier.ujf-grenoble.fr/~parisse/giac.html

Xcas is a user interface to Giac, a free, basic computer algebra system for Windows, Mac OS X and Linux/Unix. Giac can be used directly inside other C++ programs.

Xcas/Giac is developed at the Joseph Fourier University of Grenoble (Isère).

Giac has a compatibility mode with Maple and MuPAD software and TI-89, TI-92 and Voyage 200 calculators. We can use Giac / Xcas as well as a free software compatible with Maple, to develop formal algorithms, or use it in other software...

CmathOOoCAS, an OpenOffice.org plugin which allows formal calculation in Calc spreadsheet and Writer word processing, uses Xcas to perform calculation.


Here is a brief overview of what Xcas is able to:

  • computer algebra;
  • geometry in the plane;
  • geometry in space;
  • spreadsheet;
  • statistics;
  • programming.

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