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The equation of the chord joining two po...

The equation of the chord joining two points `(x_1, y_1) and (x_2, y_2)` on the rectangular hyperbola `xy=c^(2)` is

A

`x/(x_1+x_2)+ y/(y_1+y_2) =1`

B

`x/(x_1-x_2)+ y/(y_1-y_2) =1`

C

`x/(y_1+y_2)+ y/(x_1+x_2) =1`

D

`x/(y_1-y_2)+ y/(x_1-x_2) =1` .

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MODERN PUBLICATION-CONIC SECTIONS-EXERCISE
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