The sum of the reciprocals of focal distances of a focal chord `PO` of `y^2=4ax` is
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Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW The sum of the reciprocals of focal distances of a focal chord `PO` of `y^2=4ax` is
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