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二次函数y=ax²（a＞0)
Author:
吕胜
GeoGebra
New Resources
三位數除以一位數（一）
画直线等分三角形的面积
球体的体积推导
第八周作业
判斷球體
Discover Resources
發現畢氏定理
利用頂點描述二次函數
Quiz on Polar Coordinates (1) 極坐標測驗1
Net of cone
電子幾何條的副本
Discover Topics
Fractal Geometry
Exponential Functions
Logarithmic Functions
Special Points
Geometric Mean