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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
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三半圓間的相切圓(Codex╱2026.10.07)
sanjiaohanshu
近似值：有效數字
美國國旗 (Codex, 2026.10.06)
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信心水準與信賴區間的副本
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