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Saddle point
Author:
shawn800703
GeoGebra
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撒针估算面积实验
第八周作业1
龙形曲线-分形龙
第八周作业2
中华人民共和国国旗
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【三角函數】sinx的平移
圓內接四邊形任務二
二元线性规划的图解法(18.2 例6)
四角柱體（長方體）的截面
圆的面积展开的副本
Discover Topics
Pyramid
Rhombus
Coordinates
Vectors 3D (Three-Dimensional)
Quadratic Functions