圆锥曲线性质演示

GeoGebra 命令及参数

1. Point(xAxis) → A
2. Point(xAxis) → B
3. Ellipse(A, B, C) → c
4. Point(c) → P_1
5. Segment(A, P_1) → b
6. Segment(P_1, B) → d
7. Directrix(y^(2) = (4 * x)) → g,
8. Focus(y^(2) = (4 * x)) → F,
9. Intersect(g, xAxis) → D
10. Point(f) → G
11. Segment(G, F) → h
12. Point(Circle[G, abs(h)]) → H
13. Segment(G, H) → i
14. Eccentricity((3 * x^(2)) - (4 * y^(2)) = 24) → l
15. Point(xAxis) → I
16. Point(xAxis) → J
17. Hyperbola(I, J, K) → k
18. Point(k) → L
19. Segment(J, L) → p
20. Segment(L, I) → q