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Salaries Tax (F.3)
Author:
johnmayhk
GeoGebra
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近似值：有效數字
畫出對稱圖形
錐體建築師
球體建築師
第八周作业
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equation of circle
正六面體
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
小數加減
单晨整体迭代希尔伯特-你的k到几
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Boxplot
Logarithm
Similar Triangles
Exponential Functions
Vectors 2D (Two-Dimensional)