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追及相遇3.0
Author:
郭萌
GeoGebra
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第八周作业2
活动三:应用性质
球体的截面
第八周作业3
折扣
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餘弦定理的圖形證明2
直角坐標平面
兩線段和圓3
S0G5平均不等式(无字证明)
二项分布
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Means
Statistical Characteristics
Cosine
Orthocenter
Cone