A variable line L is passing through the...

A variable line L is passing through the point B(2, 5) intersects the lines `2x^2 -5xy +2y^2 = 0` at P and Q. Find the locus of the point R on L such that distances BP, BR and BQ are in harmonic progression.

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MODERN PUBLICATION-CONIC SECTIONS-EXERCISE

A variable line L is passing through the point B(2, 5) intersects the ...
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