GraphingCalculator 3.2;
Window 50 6 711 960;
PaneDivider 276;
Slider -20 20;
SliderSteps 40;
SliderControlValue 20;
2D.Scale 0.1 0.1 5 5;
2D.BottomLeft -0.28125 -2.73125;
Expr y=1/(1+x^2);
Color 3;
Expr y=1+[n/10]*x^2+x^4-x^6+x^8;
Color 4;
Expr y=1-x^2+x^4-x^6+x^8;
Color 2;
Expr y=1-x^2;