If length of focal chord `P Q` is `l ,` and `p` is the perpendicular distance of `P Q` from the vertex of the parabola, then prove that `lprop1/(p^2)dot`

If length of focal chord PQ is l, and p is the perpendicular distance of PQ from the vertex of the parabola,then prove that l prop(1)/(p^(2))

If the length of a focal chord of the parabola y^2=4a x at a distance b from the vertex is c , then prove that b^2c=4a^3dot

Length of the focal chord of the parabola y^(2)=4ax at a distance p from the vertex is:

If the tangent at the extrenities of a chord PQ of a parabola intersect at T, then the distances of the focus of the parabola from the points P.T. Q are in

Length of the focal chord of the parabola y^2=4ax at a distance p from the vertex is:

Length of the focal chord of the parabola y^2=4ax at a distance p from the vertex is:

P is a point on the parabola y^(2)=4ax whose ordinate is equal to its abscissa and PQ is focal chord, R and S are the feet of the perpendiculars from P and Q respectively on the tangent at the vertex, T is the foot of the perpendicular from Q to PR, area of the triangle PTQ is

if p: q :: r , prove that p : r = p^(2): q^(2) .