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指数函数与几何构造

指数函数与几何构造
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2017-05-05 09:28
函数解析几何几何作图
①本范例演示指数函数图像与几何图形（如风筝形）的交点构造；②涉及核心概念：指数函数、多边形、切线、割线、二次方程；③作图要点：使用 GeoGebra 的 Intersect（交点）、Polygon（多边形）、Point（点）、Distance（距离）等命令；④适合高中数学教学，用于理解函数与几何的综合应用。

GeoGebra 命令及参数

  1. Intersect(xAxis, yAxis) → A
  2. Polygon(A, B, C, D) → polyA6, a, b, c, d
  3. Point(yAxis) → F
  4. Polygon(D, C, E, F) → polyA5, d_1, c_1, e, f
  5. Point(yAxis) → H
  6. Polygon(F, E, G, H) → polyA4, f_1, e_1, g, h
  7. Point(yAxis) → J
  8. Polygon(J, I, K, L) → polyA2, j_1, i_1, k, l
  9. Polygon(L, K, M, N) → polyA1, l_1, k_1, m, n
  10. Polygon(B, O, P, C) → polyB6, b_1, o, p, c_2
  11. Polygon(C, P, Q, E) → polyB5, c_3, p_1, q, e_2
  12. Polygon(E, Q, R, G) → polyB4, e_3, q_1, r, g_2
  13. Polygon(G, R, S, I) → polyB3, g_3, r_1, s, i_2
  14. Polygon(I, S, T, K) → polyB2, i_3, s_1, t, k_2
  15. Polygon(K, T, U, M) → polyB1, k_3, t_1, u, m_1
  16. Point(xAxis) → V
  17. Polygon(O, V, W, P) → polyC6, o_1, v, w, p_2
  18. Polygon(P, W, Z, Q) → polyC5, p_3, w_1, z_1, q_2
  19. Polygon(Q, Z, A_1, R) → polyC4, q_3, z_2, a_1, r_2
  20. Polygon(R, A_1, B_1, S) → polyC3, r_3, a_2, b_2, s_2
  21. Polygon(S, B_1, C_1, T) → polyC2, s_3, b_3, c_4, t_2
  22. Polygon(T, C_1, D_1, U) → polyC1, t_3, c_5, d_2, u_1
  23. Point(xAxis) → E_1
  24. Polygon(V, E_1, F_1, W) → polyD6, v_1, e_4, f_2, w_2
  25. Polygon(W, F_1, G_1, Z) → polyD5, w_3, f_3, g_4, z_3
  26. Polygon(Z, G_1, H_1, A_1) → polyD4, z_4, g_5, h_2, a_3
  27. Polygon(A_1, H_1, I_1, B_1) → polyD3, a_4, h_3, i_4, b_4
  28. Polygon(B_1, I_1, J_1, C_1) → polyD2, b_5, i_5, j_2, c_6
  29. Polygon(C_1, J_1, K_1, D_1) → polyD1, c_7, j_3, k_4, d_3
  30. Point(xAxis) → L_1
  31. Polygon(E_1, L_1, M_1, F_1) → polyE6, e_5, l_2, m_2, f_4
  32. Polygon(F_1, M_1, N_1, G_1) → polyE5, f_5, m_3, n_1, g_6
  33. Polygon(G_1, N_1, O_1, H_1) → polyE4, g_7, n_2, o_2, h_4
  34. Polygon(H_1, O_1, P_1, I_1) → polyE3, h_5, o_3, p_4, i_6
  35. Polygon(I_1, P_1, Q_1, J_1) → polyE2, i_7, p_5, q_4, j_4
  36. Polygon(J_1, Q_1, R_1, K_1) → polyE1, j_5, q_5, r_4, k_5
  37. Point(xAxis) → S_1
  38. Polygon(L_1, S_1, T_1, M_1) → polyF6, l_3, s_4, t_4, m_4
  39. Polygon(M_1, T_1, U_1, N_1) → polyF5, m_5, t_5, u_2, n_3
  40. Polygon(N_1, U_1, V_1, O_1) → polyF4, n_4, u_3, v_2, o_4
  41. Polygon(O_1, V_1, W_1, P_1) → polyF3, o_5, v_3, w_4, p_6
  42. Polygon(P_1, W_1, Z_1, Q_1) → polyF2, p_7, w_5, z_5, q_6
  43. Polygon(Q_1, Z_1, A_2, R_1) → polyF1, q_7, z_6, a_5, r_5
  44. Distance(M, T) → MT