Paragraph: Let PQ be a focal chord of the parabola y 2 = 4 a x . The tangents to the parabola at P and Q meet at a point lying on the line y = 2 x + a , a 0 . Question: Length of chord PQ is

Question

Paragraph: Let PQ be a focal chord of the parabola y 2 = 4 a x . The tangents to the parabola at P and Q meet at a point lying on the line y = 2 x + a , a > 0 . Question: Length of chord PQ is

TestHub · Accepted Answer

R lies on y = 2x + a R , y = 2 x + a ⇒ a t - 1 t = - a t - 1 t = - 1 ⇒ t + 1 t 2 = 1 + 4 = 5 PQ = a t + 1 t 2 = 5 a

Mathematics - Parabola Question with Solution | TestHub

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