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駐波:相向而行的兩行進波線性疊加而成
Author:
ipc Wang
y=sin(3x-2t) y=sin(3x+2t)
GeoGebra
New Resources
兩位數加法
兩組對邊相等和有直角的四邊形
近似值：有效數字
球體建築師
兩位數除以一位數（一）
Discover Resources
公因數應用題
極線獨立定理 / polar independence theorem
三角層疊
旋轉4
HW question locus 4
Discover Topics
Bar Chart or Bar Graph
Logarithmic Functions
Equilateral Triangles
Probability
Linear Programming or Linear Optimization