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一元二次方程式
Author:
李正仁
Topic:
Mathematics
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
兩位數加法
判斷球體
兩位數除以一位數（二）
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函數切線及法線
餘弦定理的圖形證明2
冪函數
曲柄滑塊模擬
工具：PlaneArrows, PlaneText... (v.2)
Discover Topics
Integers
Derivative
Bar Chart or Bar Graph
Similar Triangles
Translation