JEE MATHEMATICS MCQ: PAIR OF STRAIGHT LINES

1 Easy

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Application +4 | -1

If the equation

4{x^2} + hxy + {y^2} = 0

represent coincident lines, then

h

is equal to

View answer and explanation

Correct option: D

Option D (4) is correct because for the equation

4{x^2} + hxy + {y^2} = 0

to represent coincident lines, the discriminant must be zero, leading to

h = \pm 4

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