A line bisecting the ordinate of a point on the parabola is drawn parallel to the axis to meet the curve at. If meets the tangent at the vertex at the point T, then the coordinates of T are.
Equation of the line parallel to the axis and bisecting the ordinate PN of the point is which meets the parabola at the point Coordinates of are . Equation of is
which meets the tangent at the vertex, at the point .