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GeoGebra 命令及参数

1. Point(y = -1) → A
2. Point(y = -2) → B
3. Point(y = -3) → C
4. Point(y = -4) → D
5. Point(y = -5) → E
6. Point(y = -6) → F
7. Point(y = -7) → G
8. Point(y = -8) → H
9. Point(y = -9) → I
10. Point(y = -10) → J
11. Sequence(x(Element[l1, i]), i, 1, n, 1) → l2, {0.4352114383390425, 17}
12. BoxPlot(2, 1, l2) → a
13. Sort(l2) → l3
14. If(round(n / 2, 0) ≟ n / 2, x = Element[l3, n / 2]) → eq6
15. If(round(n / 2, 0) ≟ n / 2, x = Element[l3, n / 2 + 1]) → eq7
16. Intersect(eq6, y = 0) → K
17. Intersect(eq7, y = 0) → L
18. Midpoint(K, L) → M
19. Dilate(K, If[0 < b ≤ 1, 1 - b, 0], M) → K'
20. Segment(K, K') → f
21. Dilate(M, If[1 < b ≤ 2, 2 - b, 0], L) → M'
22. Segment(M, M') → g
23. Rotate(K, If[2 < b ≤ 3, ((b - 2) * π), π], M) → K'_{1}
24. Rotate(K', If[2 < b ≤ 3, ((b - 2) * π), π], M) → K''
25. Segment(K'_{1}, K'') → f'