Through the vertex O of the parabola y = 4ax, a perpendicular is drawn to any...
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Through the vertex O of the parabola y² = 4ax, a perpendicular is drawn to any tangent meeting at P and the parabola at Q. Show that OP. OQ = constant. Through the vertex O of the parabola y² = 4ax, a perpendicular is drawn to any tangent meeting at P and the parabola at Q. Show that OP. OQ = constant.
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