Provided by: xcas_1.4.9.69+dfsg1-2build1_amd64

**NAME**

cas_help - help for the giac/xcas computer algebra system

**SYNOPSIS**

cas_helpkeyworden_cas_helpkeywordes_cas_helpkeywordfr_cas_helpkeyword

**DESCRIPTION**

This is the help engine of the symbolic and numeric calculatorgiacby Bernard Parisse. It is avaible in some different languages.

**EXAMPLE**

cas_helpgcd Help for gcd: gcd((Intg(a) or Poly),(Intg(b) or Poly)) Returns the greatest common divisor of 2 polynomials of several variables or of 2 integers or of 2 rationals. See also: 1/ lcm 2/ euler 2/ modgcd 3/ ezgcd 4/ psrgcd 5/ heugcd 6/ Gcd Ex1:gcd(45,75) Ex2:gcd(15/7,50/9) Ex3:gcd(x^2-2*x+1,x^3-1) Ex4:gcd(t^2-2*t+1,t^2+t-2) Ex5:gcd((x^2-1)*(y^2-1)*z^2,x^3*y^3*z+(-(y^3))*z+x^3*z-z)

**SEE** **ALSO**

icas(1),xcas(1)

**AUTHORS**

giacis 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 CAS_HELP(1)