偏导数：几何与函数的动态演示

GeoGebra 命令及参数

1. Segment(A, B) → g
2. Textfield(f) → InputBox1
3. Derivative(f, x) → fx
4. Derivative(f, y) → fy
5. CurveCartesian(x(A), s, f(x(A), s), s, -10, 10) → cy
6. CurveCartesian(s, y(A), f(s, y(A)), s, -10, 10) → cx
7. CurveCartesian(x(A) + s, y(A), f(x(A), y(A)) + (s * fx(x(A), y(A))), s, -10, 10) → tx
8. CurveCartesian(x(A), y(A) + s, f(x(A), y(A)) + (s * fy(x(A), y(A))), s, -10, 10) → ty
9. Textfield(Ax) → InputBox2
10. Textfield(Ay) → InputBox3
11. Function(f(x(A), y(A)) + (fx(x(A), y(A)) * (x - x(A))) + (fy(x(A), y(A)) * (y - y(A))), x(A) - 1, x(A) + 1, y(A) - 1, y(A) + 1) → TangP
12. Point(zAxis) → D
13. Intersect(zAxis, yAxis) → E
14. Vector(D, E) → u
15. Point(xAxis) → F
16. Vector(F, E) → v
17. Point(yAxis) → G
18. Intersect(yAxis, zAxis) → H
19. Vector(G, H) → w
20. Element(list1, faces) → Selectedvector