quadrique takes as arguments the expression of a
quadric with respect to x,y,z. You may also specify the variables
as a vector (second argument) or as second, third and fourth arguments.
quadrique draws this quadric.
Input :
^
2+4*y^
2+4*z^
2+4*x*y- 4*x*z-2*y*z-4*x+5*y+4*z-18)Output :
^
2+4*y^
2+4*z^
2+4*x*y-4*x*z-2*y*z-4*x+5*y+4*z-18=0See also quadrique_reduite for the parametric equation of the quadric.