函数的定义域与值域 by Breck Jacobs

GeoGebra 命令及参数

1. If(a, L, If[b, (1.5, 0), If[c, (1, 0)]]) → L1
2. If(a, g1, If[b, g2, If[c, g3]]) → f
3. Min(f, x(L1), rght) → mi11
4. If(b, (0, 0), If[c, (0.5, 0), If[a, R]]) → R1
5. Min(f, lft, x(R1)) → mig1
6. Min(list2) → min_f
7. Max(f, lft, x(R1)) → mag2
8. Min(f, x(mag2), x(R1)) → mi_2
9. Min(y(mi_2), x(mi11)) → MiE
10. Intersect(f, j, x(mag2), x(mi_2)) → E
11. Intersect(d, xAxis) → C
12. Intersect(f, d, (-3, -1.7999999999999998)) → A
13. Vector(A, B) → u
14. Defined(A) → e
15. If(x(L1) ≤ x1, If[x1 < x(R), B, R], L1) → end2
16. Segment(L1, end2) → h
17. If(lft ≤ x1, If[x1 < x(R1), B, R1], L) → end1
18. Segment(L, end1) → g
19. Intersect(f, j, lft, x(mag2)) → D
20. Vector((x(L), f(x(L))), L) → v
21. Vector((x(R), f(x(R))), R) → w
22. Vector((x(L1), f(x(L1))), L1) → z
23. Vector((x(R1), f(x(R1))), R1) → l
24. Max(f, x(L1), rght) → mag22
25. Max(list1) → max_f
26. Vector((min_f, f(min_f)), (0, f(min_f))) → r
27. If(min_f ≤ y1, If[y1 < y(mag2), M, (0, y(mag2))], Y_l) → endv1
28. Segment(Y_l, endv1) → t
29. Vector(D, (0, y(D))) → n
30. IndexOf(max_f, list1) → Ind_ma
31. IndexOf(min_f, list2) → Ind_mi
32. Vector(MiPt, (0, y(MiPt))) → v_1
33. Vector(MaPt, (0, y(MaPt))) → u_1
34. If(L1 ≠ L, Intersect[f, j, x(L1), rght], Intersect[f, j, x(mi_2), rght]) → F
35. Vector(E, (0, y(E))) → p
36. Vector(F, (0, y(F))) → q
37. If(min_f ≤ y1, If[y1 < y(mag2), (0, y(E)), (0, y(mag2))], (0, MiE)) → endv2
38. Segment((0, MiE), endv2) → a_1
39. If(min_f ≤ y1, If[y1 < y(mag22), (0, y(F)), (0, y(mag22))], (0, f(L1))) → endv3
40. Segment((0, y(L1)), endv3) → b_1
41. Segment((0, f(L1)), endv3) → c_1
42. Polygon(Corner[1], (x(Corner[1]) + (0.3 * Distance[Corner[1], Corner[2]]), y(Corner[1])), (x(Corner[4]) + (0.3 * Distance[Corner[1], Corner[2]]), y(Corner[4])), Corner[4]) → poly1, d_1, e_1, f_1, g_1