绝对值方程与不等式的几何演示

GeoGebra 命令及参数

1. RandomDiscrete({1, 2, 3, 4, 5}, {2, 5, 5, 5, 5}) → whatweget
2. Vector(C, D) → u
3. Vector(E, F) → a
4. Segment(G, H) → f
5. Random(-60, 60) → K
6. Random(-60, 60) → Qstart
7. RandomDiscrete({Qstart, 0}, {8, 2}) → Q
8. DivisorsList(abs(K - Q)) → Lpos
9. Factors(abs(K - Q)) →
10. If(K - Q > 0, Lpos, K - Q < 0, Lneg, RandomElement[{-3, -2, -1, 1, 2, 3, 4, 5}]) → Lwin
11. If(K - Q < 0, Lpos, K - Q > 0, Lneg, RandomElement[{-3, -2, -1, 1, 2, 3, 4}]) → Lloss
12. RandomDiscrete({RandomElement[Lwin], RandomElement[Lloss]}, {85, 15}) → L
13. Random(-20, 20) → Pstart
14. RandomDiscrete({Pstart, 0}, {8, 2}) → P
15. RandomDiscrete({-10, 10, 8, -8, 5, -5, 4, -4, 3, -3, 2, -2, 1, -1}, {1, 1, 1, 1, 3, 2, 3, 2, 3, 2, 4, 3, 5, 2}) → M
16. Max({x_{one}, x_{two}}) → ans_{1}
17. Min({x_{one}, x_{two}}) → ans_{2}
18. If((K - Q) / L ≥ 0, 1, (K - Q) / L < 0, 0) → Finish
19. If(Finish ≟ 1, ans_{1}, Finish ≟ 0, NaN) → x_{1}
20. If(Finish ≟ 1, ans_{2}, Finish ≟ 0, NaN) → x_{2}
21. If(Finish ≟ 1, "yes", Finish ≟ 0, "no") → obvious
22. Textfield(text4) → InputBox1
23. Textfield(guess2) → InputBox2
24. Textfield(guess1) → InputBox3
25. RandomElement({1, 2, 3, 4}) → whatweget2
26. Element({{equal1, equal2, equal3, equal4}, {GT1, GT2, GT3, GT4}, {LT1, LT2, LT3, LT4}, {GTE1, GTE2, GTE3, GTE4}, {LTE1, LTE2, LTE3, LTE4}}, whatweget, whatweget2) → whattheysee
27. Textfield(multchoice) → InputBox4
28. If(Finish ≟ 1 ∧ L > 0, 1, Finish ≟ 1 ∧ L < 0, 2, Finish ≟ 0 ∧ L > 0, 3, Finish ≟ 0 ∧ L < 0, 4) → flipsign
29. Element({{"G", "G", "A", "A"}, {"D", "F", "A", "B"}, {"F", "D", "B", "A"}, {"C", "E", "A", "B"}, {"E", "C", "B", "A"}}, whatweget, flipsign) → multchoiceanswer
30. Vector(LeftPt, (x_{2} - 5, 0)) → LeftVector
31. Vector(RightPt, (x_{1} + 5, 0)) → RightVector
32. Line(LeftPt, RightPt) → WholeLine
33. Segment(LeftPt, RightPt) → Segment1
34. If(whatweget ≟ 1, Element[{equal1, equal2, equal3, equal4}, whatweget2]) → whattheysee2