Proposition 4.

Author:Alla Stolyarevska

Proposition 4. The ratio of the distance between point M and the focus to the distance between point M and the directrix is equal to the eccentricity of the ellipse (a>b).

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apec
兩位數的位值
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
random coprime pairs
רישום חופשי

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