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UPSC NDA I 2023 Mathematics Solved Paper

Consider the following for the next two (02) items that follow :

P(x, y)

is any point on the ellipse

x^2+4 y^2=1

. Let

E, F

be the foci of the ellipse.

[NDA I 2023]

Question : 57 of 120

Marks: +1, -0

What is

P E+P F

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