Eccentricity of Parabola is 1. Eccentricity of ellipse is <1. i.e. FP / PM = 1 for parabola. Then how an ellipse will become a parabola if F1P / PM =e<1 if F1 is any one of its focus?
Asked
Active
Viewed 26 times
2
-
https://en.wikipedia.org/wiki/Dandelin_spheres – Will Jagy Jun 02 '16 at 18:43