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光的反射
Author:
JUNWAYLIANG
A,B兩點在直線L同側, 在L上找一點P使得由A點出發的光線, 會經由L上反射至B點(等價命題為:在直線L上找一點P, 使得AP+PB有最小值)
GeoGebra
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第八周作业3
比較五件物件的重量
正方形雪花图案
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第八周作业
Discover Resources
Angles in the Circumference and the Centre
Quadratic Function Calculator 二次函數計算器
分線比值
例题1
正弦图像
Discover Topics
Coordinates
Definite Integral
Differential Equation
Incircle or Inscribed Circle
Division