一元一次减法方程的解法

GeoGebra 命令及参数

1. Intersect(f, xAxis) → A
2. Random(0, 50) → a
3. Intersect(g, xAxis) → C
4. Intersect(h, xAxis) → B
5. Polygon(G, I, S, R) → poly1, q, r, s, t
6. Polygon(E, F, I, H) → poly2, e_1, f_1, i, h_2
7. Min(-2, b - 2) → xMin
8. Segment(E, B) → c
9. Segment(I, C) → k
10. Midpoint(c) → M
11. Midpoint(F, C) → N
12. Segment(D, A) → l
13. Midpoint(l) → P
14. Midpoint(P, M) → Q
15. Midpoint(R, G) → T
16. Midpoint(S, I) → U
17. Midpoint(T, U) → V
18. Polygon(W, A_1, B_1, Z) → poly3, w_1, a_1, b_1, z_1
19. Midpoint(P, A) → C_1
20. Midpoint(P, D) → D_1
21. Midpoint(M, B) → F_1
22. Midpoint(N, C) → G_1
23. Midpoint(N, F) → H_1
24. Midpoint(C_1, F_1) → O
25. Textfield(j) → InputBox1
26. Midpoint(M, E) → I_1
27. Midpoint(D_1, I_1) → J_1
28. Max(2, a + b + 2) → xMax
29. Sequence(Segment[D + (n * (1, 0)), G + (n * (1, 0))], n, 1, a, 1) → list1
30. Polygon(D, E, H, G) → poly4, d, e, h_1, g_1
31. Midpoint(C_1, G_1) → K
32. Midpoint(L, R) → L_1
33. Midpoint(K_1, S) → M_1
34. Midpoint(M_1, L_1) → N_1
35. Vector(L_1, M_1) → w
36. Intersect(r, s) → P_1
37. Segment(P_1, K_1) → j_1
38. Vector(P, M) → m
39. Vector(M, P) → n
40. Vector(M, N) → u
41. Midpoint(M, N) → J
42. Segment(L, R) → i_1
43. Sequence(Segment[E + (n * (1, 0)), H + (n * (1, 0))], n, 1, b, 1) → list2
44. If(j ≟ a + b, "Correct!", If[j ≟ a - b ∨ j ≟ (-(b + a)) ∨ j ≟ (-(a - b)), "Check your sign/operation", "Incorrect..."]) → text1