Q. The gradient of one of the lines of ${ax}^{2} + 2hxy + by^{2} = 0$ is twice that of the other, then
A) $h^{2} = ab$
B) $h = a + b$
C) $8h^{2} = 9ab$
D) $9h^{2} = 8ab$
Explanation
The correct answer is Option C: $8h^{2} = 9ab$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.