Q.24 The normals at three points P, Q, R on a rectangular hyperbola xy = c2 intersect at a point on the curve. Prove that the centre of the hyperbola is the centroid of the triangle PQR.

							
Dear student,
Take this hint:
Since the equation of the normal at (ct1, c/t1) to the hyperbola xy = c2is
                           
                         
 

 
















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