分数加减法交互演示

GeoGebra 命令及参数

1. Random(1, 5) → b
2. Random(1, 2) → h
3. Random(-5, 5) → a
4. Random(-5, 5) → c
5. Random(1, 5) → d
6. If(d ≟ b, -2, d) → n
7. If(h ≟ 1, e + g, e - g) → i
8. If((e ≤ i) ∧ (e ≤ g), e - 1, If[(i < e) ∧ (i ≤ g), i - 1, g - 1]) → xMin
9. OrthogonalLine(A, yAxis) → f
10. Vector(A, B) → u
11. Element(list1, h) → text2
12. Textfield(j) → InputBox1
13. Textfield(k) → InputBox2
14. Segment(A, E) → p
15. Segment(B, F) → q
16. If((e ≥ i) ∧ (e ≥ g), e + 1, If[(i > e) ∧ (i ≥ g), i + 1, g + 1]) → xMax