For the equation $ax^2 + 2hxy + 3y^2 + 4x + 8y - 6 = 0$ to represent a circle,what must be the values of $a$ and $h$?

  • A
    $a = 3, h = 0$
  • B
    $a = 1, h = 0$
  • C
    $a = h = 3$
  • D
    $a = h = 0$

Explore More

Similar Questions

The equation of the circle with radius $5$ and touching the coordinate axes in the third quadrant is:

The circle $x^2 + y^2 - 3x - 4y + 2 = 0$ cuts the $x$-axis at

The equation of the circle concentric with the circle $x^2 + y^2 - 4x - 6y - 3 = 0$ and touching the $y$-axis is:

The circle $x^2+y^2-8x-12y+\alpha=0$ lies in the first quadrant without touching the coordinate axes. If $(6, 6)$ is an interior point to the circle,then

The equation of the smallest circle passing through the points $(2,2)$ and $(3,3)$ is

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo