等高线与梯度场

GeoGebra 命令及参数

1. Line(A, yAxis) → r_2
2. Point(r_2) → D
3. Line(A, xAxis) → r_1
4. Point(r_1) → B
5. Midpoint(D, B) → M
6. Mirror(A, M) → C
7. Polygon(A, B, C, D) → Polígon1, a, b, c, d
8. Function(f(s, t), s, x(A), x(B), t, y(A), y(D)) → g
9. Textfield(f) → CampEntradaSortida1
10. Point(zAxis) → P
11. IntersectPath(h, f) → i
12. ImplicitCurve(f(x, y) - f_{(x,y)}) → j
13. Max(l1) → mx
14. Min(l1) → mn
15. Sequence(ImplicitCurve[f(x, y) - s], s, -5, 5, k) → llista1
16. Point(j) → E
17. Derivative(f, x) → f_x
18. Derivative(f, y) → f_y
19. Sequence(Sequence[(x(A) + (k * (x(B) - x(A)) / dens), y(A) + (l * (y(D) - y(A)) / dens)), l, 0, dens], k, 0, dens) → lli_1
20. Sequence(Sequence[Vector[Element[lli_1, k, l], Element[lli_1, k, l] + (f_x(Element[lli_1, k, l]), f_y(Element[lli_1, k, l]))], l, 0, dens], k, 0, dens) → lli_2