Mathematics · 2020
JEE Main · 5 September 2020, Shift 1 · Q65
If the co-ordinates of two points A and B are (√ 7, 0) and (-√ 7, 0) respectively and P is any point on the conic, 9 x^2+16 y^2=144, then PA + PB is…
If the co-ordinates of two points A and B are $\displaystyle (\sqrt{7}, 0)$ and $\displaystyle (-\sqrt{7}, 0)$ respectively and $\displaystyle P$ is any point on the conic, $\displaystyle 9 x^2+16 y^2=144$, then $\displaystyle \mathrm{PA}+\mathrm{PB}$ is equal to :
Official answer
(4)
$\displaystyle 8$
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JEE Main 2020 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.