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正弦函数
Author:
彭宽仁
GeoGebra
New Resources
異分母分數減法
【案例】2018年全国1卷理科12题
柱體建築師
四邊形的特性
第八周作业
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方根化簡
Demonstration of the angles at the same segment
黃金矩形
繡曲線
旋轉體：Washer Method的副本
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Area
Combinatorics
Limits
Means
Matrices