通过参数方程隐式曲线交点求两参数曲线交点

通过参数方程隐式曲线交点求两参数曲线交点
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2016-12-22 17:19
本范例演示了如何通过求解对应的隐式曲线交点来找到两条参数曲线的交点。涉及的核心数学概念包括参数方程、隐式曲线、交点求解和几何关系。作图要点包括使用 GeoGebra 命令如 ImplicitCurve(隐式曲线)、Intersect(交点)、PolyLine(多边形)、Point(点)、PathParameter(路径参数)等。适合高中及以上数学学习者,用于理解参数方程与隐式曲线的关系及交点计算方法。

GeoGebra 命令及参数

  1. ImplicitCurve(f2(x, y)) → b
  2. Intersect(Circle[D, r_b], OrthogonalLine[D, Segment[D, ClosestPoint[b, D]]], 1) → Z1_b
  3. Intersect(Circle[D, r_b], OrthogonalLine[D, Segment[D, ClosestPoint[b, D]]], 2) → Z2_b
  4. ImplicitCurve(f1(x, y)) → a
  5. Intersect(Circle[D, r_a], OrthogonalLine[D, Segment[D, ClosestPoint[a, D]]], 2) → Z2_a
  6. Intersect(Circle[D, r_a], OrthogonalLine[D, Segment[D, ClosestPoint[a, D]]], 1) → Z1_a
  7. PolyLine(Zip[ClosestPoint[b, B], B, Z1_b + ((Z2_b - Z1_b) / n_b * Sequence[i, i, 0, n_b])]) → polZb
  8. PolyLine(Zip[ClosestPoint[a, B], B, Z1_a + ((Z2_a - Z1_a) / n_a * Sequence[i, i, 0, n_a])]) → polZa
  9. Element({Intersect[polZb, polZa]}, 1) → PZ
  10. Point(a) → B
  11. PathParameter(B) → Pf1B
  12. Textfield(Nn) → InputBox4
  13. Textfield(e) → InputBox5
  14. Textfield(x_{min}) → InputBox6
  15. Textfield(x_{max}) → InputBox7
  16. Textfield(y_{min}) → InputBox8
  17. Textfield(y_{max}) → InputBox9
  18. Polygon((x_{min}, y_{min}), (x_{max}, y_{min}), (x_{max}, y_{max}), (x_{min}, y_{max})) → poly1, g1_s, g2_s, g3_s, s4_s
  19. Textfield(α) → InputBox2
  20. Length(lr1) → llr1
  21. Length(lf2) → llf2
  22. Textfield(r) → InputBox16
  23. CurveCartesian(fa_x(u), fa_y(u), u, x_{min}, x_{max}) → a_c
  24. CurveCartesian(fb_x(v), fb_y(v), v, y_{min}, y_{max}) → b_c
  25. Element(lr1, i_{manual}) → C_t
  26. Element(lr2_bscan, f) → B_{xy}
  27. Length(lf1) → llf1
  28. Textfield(fa_x) → InputBox17
  29. Textfield(fa_y) → InputBox18
  30. Textfield(fb_x) → InputBox19
  31. Textfield(fb_y) → InputBox20
  32. Textfield(n_a) → InputBox21
  33. Textfield(n_b) → InputBox22
  34. Textfield(r_a) → InputBox23
  35. Textfield(q) → InputBox24
  36. PolyLine(Z1_a + ((Z2_a - Z1_a) / n_a * Sequence[i, i, 0, n_a])) → poly2_aa
  37. PolyLine(Z1_b + ((Z2_b - Z1_b) / n_b * Sequence[i, i, 0, n_b])) → poly2_bb
  38. Point(poly2_aa, e1) → R_a
  39. Point(poly2_bb, e2) → R_b
  40. ClosestPoint(a, R_a) → R'_a
  41. ClosestPoint(b, R_b) → R'_b
  42. Length(R'_a - R'_b) → dmaxmins2
  43. If(Defined[PZ], If[fza2 < fzb2, (f1za2, f2za2), (f1zb2, f2zb2)], (NaN, NaN)) → errorz2
  44. If(Defined[PZ], If[fza2 < fzb2, R'_a, R'_b], (NaN, NaN)) → Pz2
  45. If(ca, PZ, Pz2) → PZ0
  46. If(ca, f11, x(errorz2)) → f110
  47. If(ca, f22, y(errorz2)) → f220
  48. Length(lZ1_a) → lälZ1_a
  49. Length(lZ1_b) → lälZ1_b
  50. Element(listxyres, f) → B_t
  51. Textfield(r_b) → InputBox13
  52. Textfield(α) → InputBox11
  53. Element(roots0, f) → A
  54. Sequence((fa_x(x(Element[lr1, i])), fa_y(x(Element[lr1, i]))), i, 1, llr1) → lr2_a
  55. Sequence((fb_x(y(Element[lr1, i])), fb_y(y(Element[lr1, i]))), i, 1, llr1) → lr2_b
  56. Zip(((abs(x(a - b) / x(a)) * 100), (abs(y(a - b) / y(a)) * 100)), a, lr2_a, b, lr2_b) → lr2
  57. Element(lr2_a, i_{manual}) → Cxy_t
  58. TableText({Join[{{"N"}, Sequence[i, i, 1, Length[roots0]]}], Join[{{""}, Sequence["→", i, 1, f]}], Join[{{" u:"}, x(roots0)}], Join[{{" v:"}, y(roots0)}], Join[{{"f1*10^-6"}, lf1_{Pr}2}], Join[{{"f2* 10^-6"}, lf2_{Pr}2}]}, "vr") → Text2
  59. TableText({Join[{{"N"}, Sequence[i, i, 1, llr1]}], Join[{{""}, Sequence["→", i, 1, i_{manual}]}], Join[{{"u:"}, x(lr1)}], Join[{{"v:"}, y(lr1)}], Join[{{"f1* 10^-6"}, lf1}], Join[{{"f2* 10^-6"}, lf2}]}, "vr") → text8
  60. Textfield(t) → InputBox1
  61. Textfield(f) → InputBox3
  62. TableText({Join[{{"N"}, Sequence[i, i, 1, Length[roots0]]}], Join[{{""}, Sequence["→", i, 1, f]}], Join[{{"(x,y)_a"}, lr2_ascan}], Join[{{"(x,y)_b"}, lr2_bscan}], Join[{{"(δx,δy) %"}, lr2scan}]}, "vr") → text12a
  63. TableText({Join[{{"N"}, Sequence[i, i, 1, llr1]}], Join[{{""}, Sequence["→", i, 1, i_{manual}]}], Join[{{"(x,y)_a"}, lr2_a}], Join[{{"(x,y)_b"}, lr2_b}], Join[{{"(δx,δy) %"}, lr2}]}, "vr") → text12r
  64. Textfield(i_{manual}) → Eingabefeld1
  65. Textfield(q2) → Eingabefeld2
  66. ImplicitCurve(f01(x, y)) → c

AI 绘图提示语参考

绘制两条参数曲线的交点。首先,绘制两条参数曲线并转换为隐式曲线。接着,找到每条隐式曲线与通过参数曲线上点的垂直线的交点。然后,使用这些交点来绘制参数曲线的近似线段,并找到这两组线段的交点。最后,根据给定的参数和条件,确定最终的交点位置。
以上提示语为根据原始绘图命令整理而来,仅供参考。