// kurve in parameterdarstellung
// newtons parabola nodata y^2 = x^2 - x^3
function  fx(t) return          t^2;
function  fy(t) return (t/4)*(4-t^2);
svg_open  (140,60,20,30);
svg_kreuz 10;
svg_kurve (fx,fy,-2.5,2.5,'zoom=20','sf=red');
svg_close '/tmp/filu/test_reca/test_kurven/newton.svg';

// Montgomery-Kurve
// 3y^2 = x^3 + 7x^2 + x