Maximaでベジェ曲線

bezier(x0, x1, x2, x3, t):=
    x0*t^3+
  3*x1*t^2*(1-t)+
  3*x2*t  *(1-t)^2+
    x3*    (1-t)^3;
wxplot2d([parametric, 
  bezier(10, 12, 40, 32, t), 
  bezier(2, 30, 4, 28, t ), 
  [t, 0, 1], [nticks, 20] ]);