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拋物線作圖Ex1

Author:侯杰材

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算柱 (兩位數)
畫出對稱圖形
拼砌四邊形
三位數除以一位數（二）
四邊形的特性

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為甚麼二次函數中，a是正數，開口向上?
題六
指對數交點個數
射线上滚动椭圆
黄金三角形到螺旋线（表格法）

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Sequences and Series
Tangent Function
Prism
Cosine
Algebra

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