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If P(4,125) is a point on the ellipse such that the normal at it meets the major axis of ellipse x225+y216=1 at Q, and S, S′ are the focii of the given ellipse, where S′ lies on positive x-axis, then the ratio S′Q:SQ is √ab. The value of a+b is

Answer» If P(4,125) is a point on the ellipse such that the normal at it meets the major axis of ellipse x225+y216=1 at Q, and S, S are the focii of the given ellipse, where S lies on positive x-axis, then the ratio SQ:SQ is ab. The value of a+b is


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