Home/Question #3678

JEE Advanced 2024Medium

Q.The condition that the line $lx + my + n = 0$ may be a common tangent to the pair of lines $ax^2 + 2hxy + by^2 + 2gx + 2fy + c = 0$ is

a

\Delta = 0

b

c(l^2 a + 2 h l m + b m^2) = (g l + f m + c)^2

c

c(l^2 a + 2 h l m + b m^2) = (g l + f m)^2

d

n(l^2 a + 2 h l m + b m^2) = (g l + f m)^2

Correct Answer: Option C

The correct solution involves applying the fundamental concept to derive the final value step by step...

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