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Flag 智利 Chile
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学用数学
GeoGebra
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第八周作业1
盈利與虧蝕
撒针估算面积实验
斐波那契螺旋弧线（表格法-可动态调节）
第八周作业
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黎曼和
柯西不等式 (2)
圓周_半圓內的半圓
圆-视觉差
翰林數學_2下_CH3-2_RHS證明
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Parallelogram
Translation
Hyperbola
Arithmetic Operations
Trigonometry