坐标、条形图、缩放、分段函数与期望值演示

GeoGebra 命令及参数

1. Point(yAxis) → A
2. Vector(A, B) → f_v
3. Textfield(f) → inputBox1
4. Vector(x_1, y_1) → v
5. Segment(f_x, F) → c
6. Segment(E, F) → d
7. Segment(A, x_1) → e
8. Segment(B, y_1) → g
9. Segment(B, y_1) → h_1
10. Line(x_1, y_1) → i
11. Line(A, B) → k
12. Textfield(f) → inputBox2
13. Derivative(f) → f'
14. Vector(B, C) → u
15. Line(C, D) → b
16. Intersect(b, k) → Focus
17. Line(x_1, y_1) → n
18. Line(A, B) → p
19. Intersect(n, p) → G
20. Sequence(n, n, -10, 10) → num
21. Zip((2, n), n, num) → n_y
22. Zip((4, n), n, num) → z_h
23. Vector(A, H) → w
24. Segment(f_x, E) → m
25. Point(q) → J
26. Segment(B, J) → r
27. Point(B, u) → K
28. Segment(K, H) → s
29. Zip((0, y(A) + (h * c)), c, num) → x_h
30. Zip((2, f(y(A) + (h * c))), c, num) → y_h
31. Zip(Vector[(0, y(A) + (h * c)), (4, f'(y(A) + (h * c)))], c, num) → df_h
32. Zip(Vector[(0, y(A) + (h * c)), (2, f(y(A) + (h * c)))], c, num) → f_h
33. Zip((y(A) + (h * c), f'(y(A) + (h * c))), c, num) → ptdf_h