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.  https://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)