函数导数的几何演示

GeoGebra 命令及参数

1. Textfield(f) → InputBox1
2. Point(f) → A
3. Intersect(g, h) → C
4. Slope(Line[A, C]) → a
5. Intersect(f', k) → E
6. Segment(A, F) → j
7. Dilate(A, If[0 < b ≤ 1, 1 - b, 0], B) → A'
8. Segment(A, A') → m
9. Dilate(B, If[1 < b ≤ 2, 2 - b, 0], C) → B'
10. Segment(B, B') → n
11. Vector(B, B') → u
12. Distance(B, C) → distanceBC
13. Dilate(B, If[2 < b ≤ 3, 3 - b, 0], D) → B'_1
14. Vector(B, B'_1) → v
15. Dilate(C, If[2 < b ≤ 3, 3 - b, 0], E) → C'
16. Vector(B'_1, C') → w
17. Dilate(A, If[1 < b ≤ 2, 2 - b, 0], D) → A'_1
18. Segment(A, A'_1) → p
19. Distance(B'_1, C') → distanceB'1C'
20. Circle(A, 5) → d
21. Intersect(d, h, 2) → G
22. Intersect(d, h, 1) → H
23. Vector(A, G) → e
24. Vector(A, H) → l