能量图1a

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Point(Circle[A, 1]) → B
3. Line(D, E) → g
4. Point(yAxis) → C
5. Line(C, yAxis) → f
6. Line(F, f) → h
7. Line(G, f) → i
8. Line(H, f) → j
9. Intersect(f, xAxis) → I
10. Intersect(h, xAxis) → J
11. Intersect(i, xAxis) → K
12. Intersect(j, xAxis) → L
13. Point(f) → Ki
14. Point(h) → Ugi
15. Point(i) → Kf
16. Point(j) → Ugf
17. Segment(Ki, I) → k
18. Segment(Ugi, J) → l
19. Segment(Kf, K) → Kf_1
20. Segment(Ugf, L) → Ugf_1
21. If(-0.1 < y(Kf) < 0.1, true, false) → KfCheck
22. If(y(Ki) > 0, true, false) → KiCheck
23. If(-0.1 < deltaE < 0.1, true, false) → deltaECheck
24. If(KfCheck ∧ KiCheck ∧ deltaECheck, 1, 0) → grade