If p is the length of the perpendicular from focus upon the tangent at – InterviewSolution

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1.	If p is the length of the perpendicular from focus upon the tangent at any point P of the ellipse x2a2+y2b2=1 and r is the distance of P from the focus, then (2ar−b2p2) is equal to
Answer» If $p$ is the length of the perpendicular from focus upon the tangent at any point $P$ of the ellipse $\frac{x^{2}}{a^{2}} + \frac{y^{2}}{b^{2}} = 1$ and $r$ is the distance of $P$ from the focus, then $(\frac{2 a}{r} - \frac{b^{2}}{p^{2}})$ is equal to

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