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traveling wave01
Author:
ken@ylshsap
GeoGebra
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兩位數加法
【案例】2013年安徽高考15题
祖冲之的期望：内棋与外棋
球体的体积推导
球体的体积推导（优化版）
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根據百分率找數量（一）: 例3
[問題] 已知△PAB 的面積與周長，有幾個 P 點？
gjh-f02-00 費馬點
circle
Kopia soccer
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Reflection
Binomial Distribution
Sphere
Dilation
Solids or 3D Shapes