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折扣 例5的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
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近似值：有效數字
判斷球體
長方體平面投影 (Codex版)
畫出對稱圖形
美國國旗 (Codex 版)
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Two lines
彩色斜線區域1060325
relations of pavlue fisher method
The change in SD after adding a constant
三角形
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Statistical Characteristics
Multiplication
Polygons
Frequency Distribution
Arithmetic