二元不等式组建模练习

GeoGebra 命令及参数

1. Intersect(b, eq1) → A
2. Intersect(f, a) → B
3. Intersect(a, eq1) → C
4. Intersect(f, b) → D
5. Segment(C, B) → g
6. Segment(A, D) → h
7. Intersect(a, b) → E
8. Polygon({A, E, B, (0, 0)}) → region1
9. Polygon({A, E, C}) → region2
10. Polygon({B, E, D}) → region3
11. Corner(3) → windowCorner
12. Polygon({C, E, D, (x(windowCorner), y(D)), windowCorner, (x(C), y(windowCorner))}) → region4