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二次函数y=ax²（a＞0)
Author:
吕胜
GeoGebra
New Resources
画直线等分三角形的面积
算柱 (兩位數)
【案例】2018年全国1卷理科12题
【案例】圆柱体内放置一个大球六个小球
三位數除以一位數（一）
Discover Resources
门禁系统
Time
正立方體與平面的截面
探索金字塔高度
圖形的周界
Discover Topics
Incircle or Inscribed Circle
Quadratic Functions
Histogram
Pythagoras or Pythagorean Theorem
Derivative