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生日问题1
Author:
徐晓东
GeoGebra
New Resources
球體建築師
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
兩位數除以一位數（二）
柱體建築師
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圖四
過圓內c點的弦中點軌跡
gct-a01-jc091v1-27 三角形旋轉
紙幣
硬币
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Congruence
Numbers
Function Graph
Integral Calculus
Linear Programming or Linear Optimization