JEE MATHEMATICS MCQ: PAIR OF STRAIGHT LINES

1 Easy

1 of 1

Application +4 | -1

If the equation

\lambda x^2+2 y^2-5 x y+5 x-7 y+3=0

represents two straight lines, then find the value of

\lambda

View answer and explanation

Correct option: A

Option A (2) is correct because it is the value of

\lambda

that makes the given equation represent two straight lines, derived by applying the condition

abc + 2fgh - af^2 - bg^2 - ch^2 = 0

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