正弦与余弦函数图像绘制练习：振幅、周期与垂直平移的影响

GeoGebra 命令及参数

1. Textfield(start) → InputBox1
2. Textfield(end) → InputBox2
3. Textfield(k1) → InputBox3
4. Textfield(k2) → InputBox4
5. Textfield(k3) → InputBox5
6. Point(eq6) → A
7. Point(eq7) → B
8. Point(eq8) → C
9. Point(eq9) → D
10. Textfield(a) → InputBox6
11. Textfield(b) → InputBox7
12. Point(eq10) → E
13. Point(eq7) → F
14. FitSin({A, C, D, E, F}) → f
15. Sequence(i, i, -6, -0.5, 0.5) → ampLeftList, {-6, -5.5, -5, -4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, -0.5}
16. Sequence(i, i, 0.5, 6, 0.5) → ampRightList, {0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6}
17. Union(ampLeftList, ampRightList) → ampList
18. RandomElement(ampList) → amp
19. RandomElement(Sequence[i, i, -8, 8, 0.5]) → dval
20. RandomElement({1, 2, 3, 4, 5}) → bnum
21. RandomElement({1, 2, 3, 4, 5}) → bdenom
22. RandomElement({1, 2, 3, 4, 5}) → cnum
23. RandomElement({1, 2, 3, 4, 5}) → cdenom
24. Random(1, 2) → cc
25. If(cc ≟ 1, (amp * sin(((bnum / bdenom * π) * x))) + dval, (amp * cos(((bnum * π / bdenom) * x))) + dval) → p