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定积分的概念
Author:
Zhang Guangmin
GeoGebra
New Resources
龙形曲线-分形龙2
正方形雪花图案
第八周作业1
科赫雪花
折扣
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圓和弦圓和弦
中點軌跡(動點在兩圓上)
三角形內角和_2
畢氏定理-面積切割法
七巧板(tangram)的副本
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LCM and GCD
Rectangle
Stochastic Process or Random Process
Median Line
Ratios