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李冠逸 拋物面反射
Author:
kevin20020905
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
判斷球體
第八周作业
sanjiaohanshu
Discover Resources
橢圓軌跡 (4)
area
Copy of 相關係數
銳角、直角和鈍角
GeoGebra数学资源（4-8年级）
Discover Topics
Indefinite Integral
Parabola
Cylinder
Quadratic Equations
Geometry