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正态分布的数学探究
Author:
张志勇
Topic:
Normal Distribution
GeoGebra
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近似值：有效數字
幾何作圖題：切三圓（題目）
sanjiaohanshu
Earth with coastline
世界平面地圖 (Codex╱2026.10.07)
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哈里斯螺旋 (Harriss Spiral)
九點圓
P6 圓周
餘弦函數 y=Cos(x)
Copy of 分數與小數
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Isosceles Triangles
Diagrams
Quadratic Functions
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