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waaachen
Author:
陳兪宏
孟哲老師解法
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BX3-P99
Riemann和
Bezier曲线
梯度-等高线
爱心
Discover GeoGebra
剪貼比較圖形大小 題1
Locus 1 (軌跡 一)
right pyramid display
maths hm Q.18
斜二测画
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