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locus: PA=ePL

Author:
Kai-Yong Lin
Topic:
Mathematics
A point P moving in such a manner that distance from given point A is equal to e times of its distance from the given line L. Determine the locus equation of the moving point P. 動點P至定點A之距離=離心率e*P至直線L之距離,求P之軌跡方程式

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