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拋物面的光學性質
Author:
宋政蒲
GeoGebra
New Resources
找出對稱軸
第八周作业
算柱 (兩位數)
異分母分數減法
兩位數加法
Discover Resources
根據百分率找數量（一）: 例4
整數點
正方形周界
雙重積分：Double Integral
【初中】动点问题
Discover Topics
Inequalities
Circle
Difference and Slope
Unit Circle
Pyramid