Concyclic points on rectangular hyperbola

If (x_(1),y_(1)),Q(x_(2),y_(2)),R(x_(3),y_(3)) and S(x_(4),y_(4)) are four concyclic points on the rectangular hyperbola ) and xy=c^(2), then coordinates of the orthocentre ofthe triangle PQR is

If P(x_1,y_1),Q(x_2,y_2),R(x_3,y_3) and S(x_4,y_4) are four concyclic points on the rectangular hyperbola and xy = c^2 , then find coordinates of the orthocentre of the triangle PQR

If P(x_1, y_1), Q(x_2, y_2), R(x_3, y_3) and S(x_4, y_4) are 4 concyclic points on the rectangular hyperbola xy=c^(2) the coordinates of the orthocentre of the trianglePQR are

If P(x_1,y_1),Q(x_2,y_2),R(x_3,y_3) and S(x_4,y_4) are four concyclic points on the rectangular hyperbola ) and xy = c^2 , then coordinates of the orthocentre ofthe triangle PQR is

If P(x_1,y_1),Q(x_2,y_2),R(x_3,y_3) and S(x_4,y_4) are four concyclic points on the rectangular hyperbola ) and xy = c^2 , then coordinates of the orthocentre ofthe triangle PQR is

If P(x_1,y_1),Q(x_2,y_2),R(x_3,y_3) and S(x_4,y_4) are four concyclic points on the rectangular hyperbola and xy = c^2 , then coordinates of the orthocentre ofthe triangle PQR is

The coordinates of a point on the rectangular hyperbola xy=c^2 normal at which passes through the centre of the hyperbola are

The coordinates of a point on the rectangular hyperbola xy=c^(2) normal at which passes through the centre of the hyperbola are

PM is perpendicular from a point on a rectangular hyperbola to its asymptotes , them the locus of the mid - point of PM is :