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三垂線定理

Author:詠甯

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【案例】2013年安徽高考15题
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
【案例】圆柱体内放置一个大球六个小球
四邊形的特性

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zhengming
test2
傅立葉
gjc090b13 二次函數的平移
杨辉三角形 Pascal Triangle

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Statistical Characteristics
Sequences and Series
Statistics
Prism
Random Variables

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