Multivariable Taylor series

[parisse]

Try this CAS program (you can paste it directly on the CAS commandline on the emulator)

Code:

tay(f,v,l,o):=begin
  local k,r;
  purge(r);
  k:=subst(f,v,r*v+l);
  k:=series(k,r=0,o,polynom);
  k:=subst(k,r=1);
  return k;
end:;