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Author:
lunhsin
GeoGebra
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第三周作业效果演示
常见四边形是否是双心四边形
第八周作业1
椭圆内切圆链
第八周作业3
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八年级奥数之双曲线
線性規劃xgeogebra
zuiduan
雙曲線1 焦點法
旋转的圆锥内接锥体.许兴华数学
Discover Topics
Curve Sketching
Symmetry
Logarithmic Functions
Translation
Histogram