抛物线轨迹演示

GeoGebra 命令及参数

1. Polygon((0, 0), (0, 10^(6)), (10^(6), 10^(6)), (10^(6), 0)) → a, h, i, j, l
2. PointIn(a) → A
3. Semicircle(A + (0, r), A + (0, (-r))) → c
4. Point(c) → P
5. Vector(A, P) → v0
6. Vector((x(M), y(A)), (x(M) + v0x, y(A))) → vx
7. Vector((x(A), y(A)), (x(A), y(A) + v0y)) → vy
8. PointIn(a) → B
9. Textfield(r) → CasillaDeEntrada1
10. Angle(A + (1, 0), A, P) → α
11. Vector(M, M + v) → vv
12. Segment(A, (x(A), y(A) + v0^(2) / ((2 * abs(g))))) → hArriba
13. If(v0x ≟ 0 ∧ v0y ≥ 0, (v0y + sqrt(((2 * y(A - B)) * abs(g)) + v0y^(2))) / abs(g), v0x ≟ 0 ∧ v0y < 0, (v0y - sqrt(((2 * y(A - B)) * abs(g)) + v0y^(2))) / abs(g), x(B - A) / v0x) → Tteor
14. Segment(A, (x(A), 0)) → hAbajo
15. PolyLine(reg) → pol