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sinα + sinβ > 0 ?
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
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【案例】2013年安徽高考15题
錐體建築師
畫出對稱圖形
柱體建築師
第八周作业
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對稱及變換
畢氏樹
銳角三角：sin, cos
椭圆的两条垂直切线的交点轨迹
欧拉线
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Tangent Function
Linear Functions
Normal Distribution
Function Graph
Probability