JEE MATHEMATICS MCQ: PAIR OF STRAIGHT LINES

1 Easy

1 of 1

Application +4 | -1

The gradient of one of the lines given by

a x^2+2 h x y+b y^2=0

is twice that of the other, then

View answer and explanation

Correct option: C

8 h^2=9 a b

Option D (

9 h^2=8 a b

) is correct because using the given condition about the gradients and the relationships between the coefficients and the gradients leads to

9h^2 = 8ab

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