NAME

       giac - computer algebra system

SYNOPSIS

       giac [options] files
       icas [options] files
       xcas  files

DESCRIPTION

       giac  is  an advanced symbolic and numeric calculator. The console interface is named icas
       or equivalently giac. The corresponding GUI program is called xcas.

       These programs have extensive documentation. The GIAC/XCAS manual  is  available  in  Info
       format by invoking `info giac`, and in HTML and DVI format in /usr/share/giac/doc. One can
       also obtain some help about a keyword like this, from inside the program:

          0>> ?gcd
          Returns the greatest common divisor of 2 polynomials of several variables
          or of 2 integers or of 2 rationals.
          (Intg(a) or Poly),(Intg(b) or Poly)
          gcd(45,75); gcd(15/7,50/9); gcd(x^2-2*x+1,x^3-1); gcd(t^2-2*t+1,t^2+t-2);
          gcd((x^2-1)*(y^2-1)*z^2,x^3*y^3*z+(-(y^3))*z+x^3*z-z)
          lcm,euler,modgcd,ezgcd,psrgcd,heugcd,Gcd

       The equivalent output may be retrieved by invoking (e.g.) `cas_help gcd`.

OPTIONS

       --version
              Show version of program.

       --texmacs
              To call giac/icas from inside Texmacs. Users should not need to do this.

       --emacs
              To call giac/icas from inside Emacs. Users should not need to do this.

       --sage To call giac/icas from inside Sage. Users should not need to do this.

SEE ALSO

       cas_help(1)

AUTHORS

       giac is written by Bernard Parisse.  http://www-fourier.ujf-grenoble.fr/~parisse/giac.html

       This manual page was written by Carleos Artime <carleos@pinon.ccu.uniovi.es> and Ximin Luo
       <infinity0@debian.org> for the Debian GNU/Linux system (but may be used by others).

LICENSE

       GPLv3+

                                            2017-02-08                                    GIAC(1)