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二次函数y=ax²（a＞0)
Author:
吕胜
GeoGebra
New Resources
異分母分數減法
找出對稱軸
兩位數加法
畫出對稱圖形
兩位數除以一位數（二）
Discover Resources
分段移動
方輪與方路
Locus: Fixed Distance From Fixed Point
Sunline
Locus (Parallel)
Discover Topics
Conditional Probability
Multiplication
Angles
Logarithmic Functions
LCM and GCD