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2017全国数学II 21题
Author:
wangyiyao
GeoGebra
New Resources
第三周作业效果演示
双心四边形
龙形曲线-分形龙
折扣
第八周作业
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試證明：A=B+C
軌跡五、六︰移動點與兩直線保持相等距離(平行線/角平分線)
垂直線的斜率_hui sir
p10-7
密鋪8
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Geometry
Conic Sections
Differential Calculus
Straight Lines
Geometric Distribution