格林定理关系

GeoGebra 命令及参数

1. Spline({A, B, C, D, E, F, G, H, I, J, K, A}, 3) → c
2. Point(c, t) → P
3. Tangent(P, c) → tang
4. OrthogonalLine(P, tang, xOyPlane) → perp
5. Circle(P, 1, xOyPlane) → cir
6. Intersect(perp, cir, 1) → Q1
7. Intersect(perp, cir, 2) → Q2
8. Vector(P, Q1) → u
9. Vector(P, Q2) → v
10. Translate(Vector[(0, 0, 1)], P) → k
11. Element(vdir, faces) → SelectVec
12. LaTeX(faces, true, true) → text1
13. Intersect(tang, cir, 1) → P1
14. Intersect(tang, cir, 2) → P2
15. Vector(P, P1) → tvector
16. Sequence(k, k, -1.5, 5.2, xstep) → Lx
17. Sequence(k, k, -1.5, 5.2, ystep) → Ly
18. Zip(Zip[Vector[(j, k), (j + (scale * fx(j, k)), k + (scale * fy(j, k)))], j, Lx], k, Ly) → vectorField
19. Sequence(c(i), i, 0, 1, 0.01) → LM
20. Polygon(LM) → PD
21. Translate(Vector[(0, 0, 1)], L) → nVector