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相向而行的兩行進波
Author:
ipc Wang
f(x,t)=sin(3x-2t) g(x,t)=sin(3x+2t)
GeoGebra
New Resources
畫出對稱圖形
【案例】圆柱体内放置一个大球六个小球
球体的体积推导（优化版）
兩位數加法
第八周作业
Discover Resources
折线逼近 exp(x)
菱形有甚麼特性？
Angles formed by two straight lines and transversal
Copy of sine graph 變換
俄罗斯方块（第二版）
Discover Topics
Combinatorics
Vectors 3D (Three-Dimensional)
Curve Sketching
Straight Lines
Centroid or Barycenter