线性方程组作图与分析

GeoGebra 命令及参数

1. RandomElement(List1) → D_{s2}
2. If(B_{s2} / D_{s2} ≟ A_{s2}, (-D_{s2}), D_{s2}) → D_{s}
3. RandomElement(List1) → C_{s1}
4. RandomElement(List1) → B_{s1}
5. RandomElement(List1) → A_{s1}
6. If(A_{s1} / C_{s1} ≟ B_{s1}, (-C_{s1}), C_{s1}) → C_{s}
7. RandomDiscrete({1, 2, 3, 4, 5, 6, 7}, {10, 2, 4, 3, 2, 2, 2}) → a
8. RandomDiscrete({1, 2, 3, 4, 5, 6, 7}, {10, 2, 4, 3, 2, 2, 2}) → b_{1}
9. If(b_{1} ≟ 7 ∧ a ≟ 7, 1, b_{1}) → b
10. If(a ≟ 1, RandomElement[List1], a ≟ 6, RandomElement[List6], RandomElement[List7], a ≟ 2, RandomElement[List2], a ≟ 3, RandomElement[List3], a ≟ 4, RandomElement[List4], a ≟ 5, RandomElement[List5]) → m_{e}
11. If(b ≟ 1, RandomElement[List1], b ≟ 6, RandomElement[List6], RandomElement[List7], b ≟ 2, RandomElement[List2], b ≟ 3, RandomElement[List3], b ≟ 4, RandomElement[List4], b ≟ 5, RandomElement[List5]) → n_{e}
12. If(a ≟ 1, RandomElement[List1a], a ≟ 6, RandomElement[List6a], RandomElement[List7a], a ≟ 2, RandomElement[List2a], a ≟ 3, RandomElement[List3a], a ≟ 4, RandomElement[List4a], a ≟ 5, RandomElement[List5a]) → A_{e}
13. If(a ≟ 1, RandomElement[List1a], a ≟ 6, RandomElement[List6a], RandomElement[List7a], a ≟ 2, RandomElement[List2a], a ≟ 3, RandomElement[List3a], a ≟ 4, RandomElement[List4a], a ≟ 5, RandomElement[List5a]) → C_{e}
14. If(b ≟ 1, RandomElement[List1a], b ≟ 6, RandomElement[List6a], RandomElement[List7a], b ≟ 2, RandomElement[List2a], b ≟ 3, RandomElement[List3a], b ≟ 4, RandomElement[List4a], b ≟ 5, RandomElement[List5a]) → B_{e}
15. If(b ≟ 1, RandomElement[List1a], b ≟ 6, RandomElement[List6a], RandomElement[List7a], b ≟ 2, RandomElement[List2a], b ≟ 3, RandomElement[List3a], b ≟ 4, RandomElement[List4a], b ≟ 5, RandomElement[List5a]) → D_{1}
16. If(A_{e} / C_{e} ≟ B_{e} / D_{1}, (-D_{1}), D_{1}) → D_{e}
17. RandomDiscrete({1, -1, 2, -2, 3, -3, 4, -4, 5, -5, 6, -6, 7, -7, 8, -8, 9, -9, 10, -10, 0}, {8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 6}) → m_{s}
18. RandomDiscrete({1, -1, 2, -2, 3, -3, 4, -4, 5, -5, 6, -6, 7, -7, 8, -8, 9, -9, 10, -10, 0}, {8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 6}) → n_{s}
19. RandomElement({2, 3, 4, 5, 6, -2, -3, -4, -5, -6}) → howmuchbigger
20. If(Choice ≟ 1, ((-C_{s}) * howmuchbigger), Choice ≟ 2, (C_{s} * howmuchbigger), Choice ≟ 3, howmuchbigger, Choice ≟ 4, howmuchbigger, Choice ≟ 5, (A_{e} * howmuchbigger)) → A_{big}
21. If(Choice ≟ 1, howmuchbigger, Choice ≟ 2, howmuchbigger, Choice ≟ 3, ((-D_{s}) * howmuchbigger), Choice ≟ 4, (D_{s} * howmuchbigger), Choice ≟ 5, (B_{e} * howmuchbigger)) → B_{big}
22. If(Choice ≟ 1, (D_{s1} * howmuchbigger) + RandomElement[List1], Choice ≟ 2, (D_{s1} * howmuchbigger) + RandomElement[List1], Choice ≟ 3, (C_{s2} * howmuchbigger) + RandomElement[List1], Choice ≟ 4, (C_{s2} * howmuchbigger) + RandomElement[List1], Choice ≟ 5, (R_{e} * howmuchbigger) + RandomElement[List1]) → nosolution
23. If(Choice ≟ 1, (D_{s1} * howmuchbigger), Choice ≟ 2, (D_{s1} * howmuchbigger), Choice ≟ 3, (C_{s2} * howmuchbigger), Choice ≟ 4, (C_{s2} * howmuchbigger), Choice ≟ 5, (R_{e} * howmuchbigger)) → infsolutions
24. If(Choice ≟ 1, m_{s}, Choice ≟ 2, m_{s}, Choice ≟ 3, m_{s}, Choice ≟ 4, m_{s}, Choice ≟ 5, m_{e}) → x_{ans1}
25. If(Choice ≟ 1, n_{s}, Choice ≟ 2, n_{s}, Choice ≟ 3, n_{s}, Choice ≟ 4, n_{s}, Choice ≟ 5, n_{e}) → y_{ans1}
26. If(answercode ≟ 1, x_{ans1}, answercode ≟ 2, -1000, answercode ≟ 3, 1000) → x_{ans}
27. If(answercode ≟ 1, y_{ans1}, answercode ≟ 2, -1000, answercode ≟ 3, 1000) → y_{ans}
28. Textfield(x_{guess}) → InputBox1
29. Textfield(y_{guess}) → InputBox2
30. FractionText((x_{ans}, y_{ans})) → fractext