抛物线在体育和高尔夫中的应用

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Circle(A, 1) → c
3. Intersect(c, xAxis, 2) → B
4. Rotate(B, α, A) → C
5. Segment(A, C) → a
6. Circle(C, 0.2) → d
7. OrthogonalLine(C, a) → b
8. Intersect(d, b) → D, E
9. Circle(A, 0.3) → e
10. Intersect(e, xAxis, 1) → F
11. Intersect(e, xAxis) → G, H
12. Circle(A, 0.2) → g_3
13. Line(E, a) → h
14. Intersect(g_3, h, 1) → I
15. Segment(E, I) → i
16. Segment(E, C) → j
17. Line(D, h) → k
18. Intersect(g_3, k, 1) → J
19. Segment(D, J) → l
20. Intersect(l, xAxis) → K
21. Point(xAxis) → M
22. Point(xAxis) → P
23. Intersect(s, xAxis) → W, Z
24. Segment(W, Z) → Distance
25. LineBisector(W, Z) → b_1
26. OrthogonalLine(X_0, Distance) → t_1
27. Intersect(Distance, t_1) → C_1
28. Segment(X_0, C_1) → g_1
29. If(α < 90, 0, H_2) → u
30. If(α ≟ 90°, H_2) → H_M
31. Segment(H_M, A) → j_1
32. Vector(W, W + ((v_0 / 4 * cos(α)), (v_0 / 4 * sin(α)))) → v_1
33. Tangent(X_0, f) → m
34. Circle(X_0, v_0 / 4) → p
35. Intersect(p, m) → L, S
36. Vector(X_0, S) → v
37. Function(f, 0, Distance) → f1
38. Point(xAxis) → H1
39. Point(xAxis) → I1
40. Point(xAxis) → J1
41. Polygon(I1, J1, K1, L1) → poly5, i1, j1, k1, l1
42. Point(xAxis) → U
43. Angle(U, W, W + ((v_0 / 4 * cos(α)), (v_0 / 4 * sin(α)))) → β