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(3cos2y ; y)
Author:
Sin Min
GeoGebra
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盈利與虧蝕
第八周作业
龙形曲线-分形龙2
活动三：应用性质
平行線的判定
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纏繞圖 20180317四箴國中研習
P4_四下_面積（一）(教師版)
勒洛三角形外擺線動態作圖
三角函数诱导公式的副本
算盘
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Circle
Conic Sections
Linear Functions
Probability
Optimization Problems