GraphingCalculator 3.2;
SignificantDigits 14;
FontSizes 12 9 9;
BackgroundColor 192 192 192;
3D.Z -1 2;
3D.Axes 0;
3D.Depth 0.8665454871485726;
3D.View 0.2129220588825042 -0.9756404465996062 -0.05281965354104 0.9479053726072011 0.2193739515344358 -0.2309772152629365 0.2369379695694506 -0.0008878891420714104 0.9715243744905434;
3D.Rotation 1 0 0 0 1 0 0 0 1;
Color 17;
Expr z=x^2/a^2+y^2/a^2;
Color 6;
Grain 1;
Expr vector(x,y,z)=vector(v*cos(2*pi*u),v*sin(2*pi*u),v^2);