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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
拼砌四邊形
異分母分數減法
兩位數加法
兩位數除以一位數（一）
画直线等分三角形的面积
Discover Resources
拋物線作圖Ex1
Remainder Theorem and Factor Theorem(餘式定理及因式定理)
旋轉對稱
指数函数的副本
翰林卷第10题
Discover Topics
Circle
Curve Sketching
Numbers
Frequency Distribution
Root