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橢圓教學_2016
Author:
Wu Xiao-Ren
Topic:
Ellipse
橢圓教學_2016
GeoGebra
Question:
1. s 與橢圓的關係? 2. 焦點F' 對 s 的對稱點? 3. 由F' 射向橢圓的光線,反射後通過哪裡?
習題:
1. 證明:橢圓兩焦點F, F' 到切線的距離乘積= (半短軸長)平方。
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