线性函数的绘图与写作：通过GeoGebra实现动态分析

GeoGebra 命令及参数

1. Union(Sequence[-20, -1], Sequence[1, 20]) → numlist
2. Sequence(1, 10) → denomlist
3. Sequence(-20, 20) → blist
4. Sequence(11, 50) → n
5. RandomElement(blist) → b
6. FractionText(s) → text1
7. Denominator(s) → a
8. Textfield(g) → InputBox1
9. Sequence(i, i, 1, 20, 1) → kseq
10. RandomElement(kseq) → k
11. Textfield(d) → InputBox2
12. Sequence((a * i), i, 5, 75, 1) → deonm2list
13. RandomElement(deonm2list) → chosenans
14. Textfield(e) → InputBox3
15. PointIn(x ≥ 0) → A
16. PointIn(x ≥ 0) → B
17. Slope(eq1) → c
18. Intersect(eq1, x = 0) → C
19. Intersect(p, eq2) → E
20. Segment((0, y(E)), E) → j
21. Segment(D, E) → l
22. Intersect(p, q) → G
23. Segment(F, G) → r
24. Segment(G, H) → t
25. Line(A, B) → f_1