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S2E3L6夏至的日照与竿影变化
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浅蓝色
GeoGebra
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撒针估算面积实验
异形操场
第八周作业3
第八周作业
椭圆内切圆链
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Linear Programming 線性規劃
梯形旋轉
平移
拼貼11939
橢圓2-四圓心近似法
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Cylinder
Unit Circle
Logarithmic Functions
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