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The tangent at a point P on a curve meet...

The tangent at a point P on a curve meets x-axis in A. If area of triangle OAP is `a^2` then equation of curve is `x=c y+(a^2)/y` (2) `y=c x+(a^2)/x` `y=c x-(a^2)/x` (4) `y=c x-(a^2)/(2x)`

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