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Introduction

Giac is a C++ library for computer algebra system distributed under the GPL license, Xcas groups in the same graphical user interface the CAS functionnalities of giac, a small spreadsheet and interactive geometry. Both are under active development, the implemented math functionnalities can today be used at undergraduate level. Programmation can be done using the interpreted language available in several flavours compatible with popular CAS (Maple, Mupad, TI89), or directly in C++ (either as a standalone program using the giac library or as dynamically linked libraries to be loaded at runtime in an xcas session). In xcas, you can display several views of a same object, e.g. for a geometrical point, the point in a figure and it's coordinates in the computation screen. xcas outputs LATEX files, it is therefore easy to insert figures or function graphs inside your own LATEX files.
\includegraphics[width=\textwidth]{xcas9en}



giac documentation written by Bernard Parisse