四阶矩与统计分布：第83页交互演示

GeoGebra 命令及参数

1. Point(xAxis) → A_1
2. Segment(A_1, B) → a
3. Point(a) → G
4. Point(a) → H
5. OrthogonalLine(H, a) → g
6. Point(g) → J
7. Segment(H, J) → m
8. Vector(H, J) → v
9. Midpoint(H, J) → T
10. Point(a) → A
11. OrthogonalLine(A, a) → f
12. Point(f) → I
13. Vector(A, I) → u
14. Segment(A, I) → l
15. Point(l) → E_1
16. Point(a) → R
17. Segment((x(R), y(T)), T) → i_1
18. OrthogonalLine(E_1, p) → s_1
19. Intersect(s_1, p) → F_1
20. Segment(E_1, F_1) → t_1
21. Vector(G, K) → w
22. Point(a) → R_2
23. Circle(R_2, 3.02) → c
24. Intersect(c, b) → D_1, E
25. Polygon(D_1, R_2, E) → poly1, e, d, c_1
26. OrthogonalLine(G, a) → i
27. If(o_1 > 0, Vector[(-u) - v - w], Vector[(-u) - v]) → h
28. Vector(R_2, C') → j
29. Segment(C', R) → r_1
30. Point(p) → L
31. OrthogonalLine(L, p) → q
32. Point(p) → M_1
33. Intersect(q, r_1) → Q
34. Segment(L, Q) → s
35. Textfield(len) → InputBox1
36. Midpoint(A, I) → R_1
37. Midpoint(G, K) → U
38. Segment((x(R), y(R_1)), R_1) → j_1
39. Segment((x(R), y(U)), U) → h_1
40. Segment(S, V) → k_1
41. Midpoint(S, V) → W
42. Point(Circle[R, 5.0039984012787215]) → P
43. Polygon(R, P, Z) → C, z_1, m_1, p_1
44. Point(l) → C_1
45. OrthogonalLine(C_1, w, xOyPlane) → n_1
46. Point(Circle[G, 5.0039984012787215]) → F
47. Polygon(G, F, B_1) → D, b_2, g_2, f_2
48. If(o_1 < 0, ((x(A) + x(R)) / 2, 15)) → Q_{2}
49. If(o_1 < 0, ((x(A) + x(R)) / 2, -15)) → M
50. Segment(Q_{2}, M) → tilt
51. Vector(R, C') → r
52. Segment(G, K) → r_2