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Mathematics
Problem
If eccentricity of ellipse
E
n
E_n
E
n
is
e
n
e_n
e
n
, then the locus of
(
e
n
2
,
e
n
−
1
2
)
(e_n^2, e_{n-1}^2)
(
e
n
2
,
e
n
−
1
2
)
is a. a parabola b. an ellipse c. a hyperbola d. a rectangular hyperbola
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