对数性质动态演示

GeoGebra 命令及参数

1. Textfield(a) → InputBox1
2. Textfield(f_1) → InputBox2
3. Textfield(f) → InputBox3
4. Intersect(f, h, 1) → E
5. Dilate(F, If[0 < d ≤ 1, 1 - d, 0], A) → F'
6. Dilate(A, If[1 < d ≤ 2, 2 - d, 0], B) → A'
7. Segment(A, A') → j
8. Dilate(B, If[2 < d ≤ 3, 3 - d, 0], G) → B'
9. Vector(B, B') → u
10. Translate(A, u) → A'_1
11. Translate(A', u) → A''
12. Segment(A'_1, A'') → j'
13. Rotate(A'_1, If[3 < d ≤ 4, ((-(d - 3)) * π / 2), ((-π)) / 2], F) → H
14. Rotate(A'', If[3 < d ≤ 4, ((-(d - 3)) * π / 2), ((-π)) / 2], F) → A'''
15. Segment(H, A''') → j''
16. Rotate(A'_1, If[3 < d ≤ 4, ((d - 3) * π / 2), π / 2], F) → I
17. Rotate(A'', If[3 < d ≤ 4, ((d - 3) * π / 2), π / 2], F) → A'''_1
18. Dilate(D, If[4 < d ≤ 5, 5 - d, 0], E) → D'
19. Segment(D, D') → l
20. Dilate(A, If[1 < d ≤ 2, 2 - d, 0], C) → A'_2
21. Segment(A, A'_2) → m
22. Dilate(A, If[2 < d ≤ 3, 3 - d, 0], R) → C'
23. Vector(C, C') → v
24. Translate(A'_2, v) → K
25. Rotate(K, If[3 < d ≤ 4, ((-(d - 3)) * π / 2), ((-π)) / 2], F) → K'
26. Intersect(f, p, 1) → N
27. Rotate(F, If[5 < d ≤ 6, ((d - 5) * π / 2), π / 2], F) → F'_1
28. Rotate(F', If[5 < d ≤ 6, ((d - 5) * π / 2), π / 2], F) → F''
29. Dilate(F, If[6 < d ≤ 7, 7 - d, 0], M) → F'_2
30. Vector(F, F'_2) → w
31. Translate(F'_1, w) → P
32. Translate(F'', w) → F'''
33. Distance(A, C) → distanceAC
34. Vector(A, A'_2) → i
35. Dilate(Q, If[3 < d ≤ 4, 4 - d, 0], V) → Q'
36. Vector(Q, Q') → v_1
37. Distance(Q, V) → distanceQV
38. Vector(A, C') → b_1
39. Translate(i, b_1) → i'
40. Translate(C, b_1) → C'_1
41. Vector(K, C'_1) → e
42. Distance(K, C'_1) → distanceKC'1
43. Dilate(Q, If[4 < d ≤ 5, 5 - d, 0], C'_1) → Q'_1
44. Vector(Q, Q'_1) → q
45. Translate(V, q) → V'
46. Vector(Q'_1, V') → u_1
47. Distance(Q'_1, V') → distanceQ'1V'
48. Dilate(W, If[6 < d ≤ 7, 7 - d, 0], L) → W'
49. Vector(W, W') → w_1
50. Distance(W, L) → distanceWL