Published by:
CGP EDU Academic Team
Published on: August 13, 2026
P is any point on the ellipse 81x 2 +144y 2 = 1944 whose foci are S and S ′ then SP +S ′ P=
A
3
B
4 
C
36
D
324
Text Solution
Verified by ExpertsThe correct answer is:
B
+ 
= 1 ⇒ 
+ 
= 1
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