Draw a conic section in a geometry artboard

It's possible to draw with parameters.
1, first new two parameters a=6 and b=3
2. Click "Data" → "new Function", f (x) =a*cos (x), g (x) =b*sin (x).
3, select the new two functions in 2, click on the "drawing" → "Draw parametric curve", in the popup dialog box, the "Show Arrows and Endpoints" before the check out, the definition field to-π≤t≤π (in the geometry artboard directly enter the letter p, he will automatically become π) Click OK. The ellipse will come out.
4, you can adjust the ellipse by the parameters A and B, when the a=b, it will become a circle. The Hyperbolic method is also the same, the establishment of two parametric equations F (x) =a*1/cos (x), g (x) =b*tan (x) (indicating that there is no secant function in the geometry artboard, so use 1/cos (x) instead).

Draw a conic section in a geometry artboard