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圓相切
Author:
一路梁
圓相切
GeoGebra
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【案例】2018年全国1卷理科12题
兩位數除以一位數（二）
第八周作业
球体的体积推导（优化版）
異分母分數減法
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sin(x)0-720
功課
頂點法
动感数学
杨辉三角
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Numbers
Upper and Lower Sum or Riemann Sum
Plane Figures or Shapes
Isosceles Triangles
Cosine