指数法则的几何演示

指数法则的几何演示
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2019-04-11 11:19
①本范例通过几何图形演示了指数法则的应用,直观展示指数运算的几何意义。②涉及的核心数学概念包括指数运算、几何变换、相似比和图形放大。③作图要点:运用了Segment(线段)、Dilate(缩放)、Intersect(交点)、Vector(向量)、Translate(平移)、Polygon(多边形)、Rotate(旋转)、Circle(圆)、Line(直线)、OrthogonalLine(垂线)、Point(点)、Angle(角度)等GeoGebra命令和对象。④适合高中数学教学,用于帮助学生理解抽象的指数法则,增强空间想象能力。

GeoGebra 命令及参数

  1. Segment(E, F) → g
  2. Dilate(A, If[0 < d ≤ 1, 1 - d, 0], (b, 0)) → A'
  3. Dilate(B, If[0 < d ≤ 1, 1 - d, 0], (b, 0)) → B'
  4. Segment(A, A') → h
  5. Intersect(f, i, (1.8642830646268114, 1.8725094674603222)) → K
  6. Intersect(f, j, (3.01, 2.753248348510107)) → L
  7. Dilate(J, If[1 < d ≤ 2, 2 - d, 0], K) → J'
  8. Segment(J, J') → k
  9. Dilate(M, If[2 < d ≤ 3, 3 - d, 0], C) → M'
  10. Segment(M, M') → l
  11. Dilate(C, If[3 < d ≤ 4, 4 - d, 0], I) → C'
  12. Segment(C, C') → m
  13. Dilate(I, If[4 < d ≤ 5, 5 - d, 0], L) → I'
  14. Segment(I, I') → n
  15. Dilate(M, If[5 < d ≤ 6, 6 - d, 0], (b, -2)) → M'_1
  16. Vector(M, M'_1) → u
  17. Translate(M, u) → M'_2
  18. Translate(M', u) → M''
  19. Segment(M'_2, M'') → l'
  20. Dilate(A, If[5 < d ≤ 6, 6 - d, 0], (0, -2)) → A'_1
  21. Vector(A, A'_1) → v
  22. Translate(A, v) → A'_2
  23. Translate(A', v) → A''
  24. Segment(A'_2, A'') → h'
  25. Dilate(M'', If[6 < d ≤ 7, 7 - d, 0], G) → M'''
  26. Segment(M'', M''') → p
  27. Intersect(f, q, (4.874283064626811, 5.155483598854672)) → D
  28. Dilate(G, If[7 < d ≤ 8, 8 - d, 0], D) → G'
  29. Segment(G, G') → r
  30. Dilate(E, If[9 < d ≤ 10, 10 - d, 0], D) → E'
  31. Vector(E, E') → w
  32. Translate(E, w) → E'_1
  33. Translate(F, w) → F'
  34. Segment(E'_1, F') → g'
  35. Dilate(D, If[10 < d ≤ 11, 11 - d, 0], F') → D'
  36. Vector(D, D') → s
  37. Translate(G, s) → G'_1
  38. Translate(G', s) → G''
  39. Segment(G'_1, G'') → r'
  40. Dilate(D, If[11 < d ≤ 12, 12 - d, 0], G) → D'_1
  41. Vector(D, D'_1) → t
  42. Translate(E'_1, t) → N
  43. Translate(F', t) → F''
  44. Segment(N, F'') → g''
  45. Polygon(G, G'_1, F', D) → q1, g_1, g'_1, f', d_1
  46. Dilate(K, If[13 < d ≤ 14, 14 - d, 0], L) → K'
  47. Vector(K, K') → u_1
  48. Translate(J, u_1) → J'_1
  49. Dilate(K, If[12 < d ≤ 13, 13 - d, 0], L) → K'_1
  50. Vector(K, K'_1) → v_1
  51. Translate(J, v_1) → J'_2
  52. Translate(J', v_1) → J''
  53. Segment(J'_2, J'') → k'
  54. Rotate(J'_2, If[12 < d ≤ 13, ((-(d - 12)) * π / 2), ((-π)) / 2], K'_1) → P
  55. Rotate(J'', If[12 < d ≤ 13, ((-(d - 12)) * π / 2), ((-π)) / 2], K'_1) → J'''
  56. Segment(P, J''') → k''
  57. Dilate(L, If[13 < d ≤ 14, 14 - d, 0], P) → L'
  58. Vector(L, L') → w_1
  59. Translate(I, w_1) → I'_1
  60. Translate(I', w_1) → I''
  61. Segment(I'_1, I'') → n'
  62. Dilate(P, If[14 < d ≤ 15, 15 - d, 0], I'_1) → P'
  63. Vector(P, P') → a_1
  64. Translate(P, a_1) → P'_1
  65. Translate(J''', a_1) → Q
  66. Segment(P'_1, Q) → k'''
  67. Polygon(I'_1, I, L, P) → q2, i'_1, i_1, l_1, p_1
  68. Circle(I'_1, r) → c_1
  69. Intersect(c_1, f_1, 1) → R
  70. Dilate(P, If[16.5 < d ≤ 17.5, 17.5 - d, 0], R) → P'_2
  71. Vector(P, P'_2) → b_1
  72. Translate(L, b_1) → L'_1
  73. Polygon(I'_1, I, L'_1, P'_2) → q3, i'_2, i_2, l'_1, p'_2
  74. Segment(I'_1, P'_2) → h_1
  75. Segment(I, L'_1) → j_1
  76. Segment(L'_1, P'_2) → k_1
  77. Line(L'_1, I) → m_1
  78. OrthogonalLine(P'_2, m_1) → n_1
  79. Intersect(m_1, n_1) → S
  80. Dilate(L'_1, If[19.5 < d ≤ 20.5, 20.5 - d, 0], S) → T
  81. Vector(L'_1, T) → e_1
  82. Translate(I, e_1) → I'_2
  83. Polygon(I'_1, I'_2, T, P'_2) → q4, i'_3, i'_4, t_1, p'_1
  84. Segment(T, I'_2) → q_1
  85. Segment(T, P'_2) → r_1
  86. Segment(I'_2, I'_1) → s_1
  87. Line(T, g) → f_2
  88. Point(f_2) → Z
  89. Angle(P'_2, T, Z) → α
  90. Dilate(E, If[21 < d ≤ 22, 22 - d, 0], T) → E'_2
  91. Vector(E, E'_2) → u_2
  92. Translate(E, u_2) → E'_3
  93. Translate(F, u_2) → F'_1
  94. Segment(E'_3, F'_1) → g'_2
  95. Rotate(E'_3, If[21 < d ≤ 22, ((-(d - 21)) * α), (-α)], E'_3) → U
  96. Rotate(F'_1, If[21 < d ≤ 22, ((-(d - 21)) * α), (-α)], E'_3) → V
  97. Segment(U, V) → g_2
  98. Dilate(T, If[23 < d ≤ 24, 24 - d, 0], F') → T'
  99. Vector(T, T') → v_2
  100. Translate(I'_1, v_2) → W
  101. Translate(I'_2, v_2) → A_1
  102. Translate(T, v_2) → T'_1
  103. Translate(P'_2, v_2) → B_1
  104. Polygon(W, A_1, T'_1, B_1) → q4', w_2, a_2, t'_1, b_2
  105. Rotate(W, If[23 < d ≤ 24, ((-(d - 23)) * (π - α)), (-(π - α))], T'_1) → W'
  106. Rotate(A_1, If[23 < d ≤ 24, ((-(d - 23)) * (π - α)), (-(π - α))], T'_1) → C_1
  107. Rotate(T'_1, If[23 < d ≤ 24, ((-(d - 23)) * (π - α)), (-(π - α))], T'_1) → D_1
  108. Rotate(B_1, If[23 < d ≤ 24, ((-(d - 23)) * (π - α)), (-(π - α))], T'_1) → E_1
  109. Polygon(W', C_1, D_1, E_1) → q4'', w', c_2, d_2, e_2

AI 绘图提示语参考

画一个几何图形,展示指数幂的几何意义。从一条基线开始,通过多次缩放和变换,创建一系列大小不同的相似图形,并用线段连接关键点,最终形成一个包含多个层级、展示指数运算结果的复杂结构,强调相似比和几何变换的关系。
以上提示语为根据原始绘图命令整理而来,仅供参考。