If and are the slopes of the two tangents drawn from to the parabola

MATHEMATICS · Single correct · CBSE · Mathematics · Conic Sections · Conic Sections

Problem

m_1

and

m_2

are the slopes of the two tangents drawn from

(2,3)

to the parabola

y^2=4x

, then the value of

\frac{1}{m_1}+\frac{1}{m_2}

is: (1)

-3

(2)

3

(3)

\frac{2}{3}

(4)

\frac{3}{2}