JEE MATHEMATICS MCQ: PAIR OF STRAIGHT LINES

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If the equation

x^2+(\lambda+\mu) x y+\lambda \mu y^2+x+\mu y=0

represents two parallel straight lines, then

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Correct option: C

\lambda=\mu

Option C (

\lambda=\mu

) is correct because it is the condition that makes the given equation represent two parallel straight lines, which requires the discriminant to be zero.

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