猴子鞍座/圆柱

GeoGebra 命令及参数

1. UnitVector(rp) → eu
2. Surface(u, v, u^(3) - ((3 * u) * v^(2)), u, -1, 1, v, -1, 1) → a
3. Surface((R * cos(u)), ((R * kE) * sin(u)), v, u, 0, (2 * pi), v, -1, 1) → b
4. CurveCartesian((R * cos(t)), ((R * kE) * sin(t)), (R^(3) * (cos(t))^(3)) - ((((3 * R^(3)) * kE^(2)) * cos(t)) * (sin(t))^(2)), t, 0, t1) → c
5. CurveCartesian((R * cos(t)), ((R * kE) * sin(t)), (R^(3) * (cos(t))^(3)) - ((((3 * R^(3)) * kE^(2)) * cos(t)) * (sin(t))^(2)), t, 0, tE) → g
6. Vector(S, S1) → w
7. Vector(S, S1) → h
8. Vector(S, S2) → i
9. Vector(S, S3) → j