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两角和与差的余弦、正弦公式(动画2)
Author:
叶卢庆
GeoGebra
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兩位數除以一位數(二)
【案例】2018年全国1卷理科12题
四邊形的特性
柱體建築師
第八周作业
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分數除法
CircleIII
Net of pyramid
求一數是另一數的幾分之幾?
重要的馬克勞林級數 (Some Important Maclaurin Series)
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Cone
Boxplot
Coordinates
Combinatorics
Histogram