二次函数练习

GeoGebra 命令及参数

1. Textfield(q3stxv) → InputBox3
2. Random(1, 8) → kK
3. Random(1, 3) → q3ran
4. Textfield(q3styvt) → InputBox4
5. RandomElement(r1list) → r1
6. Remove(r1list, {r1}) → r2list
7. RandomElement(r2list) → r2
8. RandomElement(alist) → aA
9. Expand((aA * (x - r1)^(2)) + kK) → f4
10. Expand((-f4(x))) → g4
11. If(aA ≟ 1, ((x - r1) * (x - r2)), ((aA * (x - r1)) * (x - r2))) → f1
12. If(q3ran ≟ 1, f1, If[q3ran ≟ 2, f4, g4]) → q3f
13. Extremum(q3f) → Q3VTX
14. AreEqual(InputBox3, q3ansx) → corrq3a
15. AreEqual(InputBox4, q3ansy) → corrq3b
16. Textfield(q2stx2) → InputBox2
17. Random(-20, -1) → extrac
18. Random(1, 3) → q2ran
19. Textfield(q2stx1) → InputBox1
20. Expand(f1) → f2
21. Simplify(f2(x) + extrac) → f3
22. Expand((-f3(x))) → g3
23. If(q2ran ≟ 1, f2, If[q2ran ≟ 2, f3, g3]) → q2f
24. Coefficients(q2f) → q2coeflist
25. Element(q2coeflist, 1) → q2aA
26. Element(q2coeflist, 2) → q2bB
27. Element(q2coeflist, 3) → q2cC
28. Expand((aA * (x - r1)^(2))) → f5
29. Random(1, 6) → q1ran
30. If(question ≟ 1 ∨ question ≟ 2, 1, If[question ≟ 3 ∨ question ≟ 5, 2, 3]) → qQ
31. If(q1ran ≟ 1, f2, If[q1ran ≟ 2, f3, If[q1ran ≟ 3, g3, If[q1ran ≟ 4, f4, If[q1ran ≟ 5, g4, f5]]]]) → q1f
32. SelectedElement(q1droplist) → stansq1
33. If(q1ran ≟ 6, 1, If[q1ran ≟ 4 ∨ q1ran ≟ 5, 0, 2]) → ansq1
34. Coefficients(q1f) → q1coefflist
35. Element(q1coefflist, 1) → q1aA
36. Element(q1coefflist, 2) → q1bB
37. Element(q1coefflist, 3) → q1cC
38. If(ansq1 ≟ 0, "<0", If[ansq1 ≟ 1, "=0", ">0"]) → solq1txta
39. If(aA ≟ 1, "", Text[aA]) → aAtxtif
40. Coefficients(q3f) → q3coefflist
41. Element(q3coefflist, 1) → q3aA
42. Element(q3coefflist, 2) → q3bB
43. Element(q3coefflist, 3) → q3cC
44. Factor(q2f) → q2fsol