三维曲面的曲率可视化

GeoGebra 命令及参数

1. Textfield(f) → Eingabefeld1
2. Circle(A, r, xOyPlane) → c
3. Point(c) → B
4. OrthogonalLine(B, xOyPlane) → g
5. Segment(B, C) → h
6. Segment(D, A) → i
7. CurveCartesian(x(A) + (r * cos(t)), y(A) + (r * sin(t)), f(x(A) + (r * cos(t)), y(A) + (r * sin(t))), t, 0, (2 * π)) → k
8. Segment(A, B) → j
9. CurveCartesian(x(A) + (t * (x(B) - x(A))), y(A) + (t * (y(B) - y(A))), f(x(A) + (t * (x(B) - x(A))), y(A) + (t * (y(B) - y(A)))), t, 0, 1) → l