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相向而行的兩行進波
Autor:
ipc Wang
f(x,t)=sin(3x-2t) g(x,t)=sin(3x+2t)
GeoGebra
Novos Materiais
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
拼砌四邊形
三位數除以一位數（二）
找出對稱軸
Descubra Materiais
會考小測試
concurrence of medians and bimedians of tetrahedron
比例線段截面積
內外切圓性質
relations of pavlue fisher method
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