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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
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Fibonacci Clock
三半圓間的相切圓(Codex╱2026.10.07)
幾何作圖題：切三圓（題目）
伊朗國旗 (Codex╱2026.10.07)
世界平面地圖 (Codex╱2026.10.07)
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這是我的答案
反餘弦函數
单位圆画三角函数图像
Ice Mountain
Degrés vers radians
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