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ie 8
Author:
LAM YU SANG
GeoGebra
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直線的斜率：水平變化 & 鉛垂變化
圓的切線方程
折扣
第八周作业
第三周作业效果演示
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分數除法2: p/q ÷ b（均分）
固定三角形的條件−題2
trigonometry1
S5 2D Trigonometry
奠基
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Random Variables
Area
Derivative
Fractions
Rhombus