Home
Class 12
MATHS
If 2x^(2)+by^(2)+4x-6y-1=0 represents a ...

If `2x^(2)+by^(2)+4x-6y-1=0` represents a circle, then b=

A

2

B

3

C

1

D

0

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • CIRCLE

    DIPTI PUBLICATION ( AP EAMET)|Exercise Exercise 1B(Circle-Line)|142 Videos

  • CIRCLE

    DIPTI PUBLICATION ( AP EAMET)|Exercise Exercise 1C(Pole, Polar)|107 Videos

  • CIRCLE

    DIPTI PUBLICATION ( AP EAMET)|Exercise Set 4|4 Videos

  • BINOMIAL THEOREM

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 (SPECIAL TYPE QUESTIONS) SET - 4|4 Videos

  • COMPLEX NUMBERS

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 (SPECIAL TYPE QUESTIONS) (SET - 4)|5 Videos

Similar Questions

Explore conceptually related problems

If x^(2) +y^(2) -4x + 6y + c = 0 represents a circle with radius 6 then find the value of c.

If x^2 + y^2 - 6x + 4y - 12 = 0 represents a circle, then find its parametric equations.

If x^(2)+y^(2)+2gx+6y+5g+3=0 represents a circle then g in

Find the value of a if 2x^(2)+ay^(2)-2x+2y-1=0 represents a circle and also find its radius. (ii) Find the values of a,b if ax^(2)+bxy+3y^(2)-5x+2y-3=0 represents a circle. Also find the radius and centre of the circle. (iii) If x^(2)+y^(2)+2gx+2fy=0 represents a circle with centre (-4,-3) then find g,f and the radius of the circle. (iv) If the circle x^(2)+y^(2)+ax+by-12=0 has the centre at (2,3) then find a ,b and the raidus of the circle. (v) If the circle x^(2)+y^(2)-5x+6y-a=0 has radius 4 , find a

If x^(2)+y^(2)-4x+6y+c=0 represents a circle of radius 5 then c=

The equation x^(2)+y^(2)+4x+6y+13= 0 represents

If the circle x^(2) + y^(2) + 4x - 6y - c = 0 bissects the circumference of the circle x^(2) + y^(2) - 6x + 4y - 12 = 0 , then c =

If A_(1),A_(2),A_(3) be the areas of circles x^(2)+y^(2)+4x+6y-19=0, x^(2)+y^(2)=9, x^(2)+y^(2)-4x-6y-12=0 respectively then

DIPTI PUBLICATION ( AP EAMET)-CIRCLE-Exercise 1A(Circle)
  1. If the lines 2x -3y=5 and 3x-4y=7 are two diameters of a circle of rad...

    Text Solution

    |

  2. The length of the diameter of the circle which touches the x-axis at t...

    Text Solution

    |

  3. If 2x^(2)+by^(2)+4x-6y-1=0 represents a circle, then b=

    Text Solution

    |

  4. If x^(2)+y^(2)-4x+6y+c=0 represents a circle of radius 5 then c=

    Text Solution

    |

  5. If x^(2)+y^(2)+2gx+2fy+9=0 represents a circle with centre (1,-3) then...

    Text Solution

    |

  6. The point (-1,0) lies on the circle x^2+y^2-4x+ 8y + k=0. The radius o...

    Text Solution

    |

  7. The centroid of an equilateral triangle is (0, 0) and the length of th...

    Text Solution

    |

  8. Origin is the centre of a circle passing through the vertices of an eq...

    Text Solution

    |

  9. The circumcircle of a triangle is given by x^(2)+y^(2)-4x+6y-3=0. The ...

    Text Solution

    |

  10. The centres of the three circles x^(2)+y^(2)-10x+9=0, x^(2)+y^(2)-6x+2...

    Text Solution

    |

  11. For the circle x^(2)+y^(2)-4x-2y-36=0, the point (3, 5)

    Text Solution

    |

  12. For the circle 2x^(2)+2y^(2)-5x-4y-3=0 the point (3, 5)

    Text Solution

    |

  13. The power of the point (1, 2) w.r.t the circle x^2 + y^2-4x-6y - 12 =0...

    Text Solution

    |

  14. The value of a, such that the power of the point (1, 6) with respect t...

    Text Solution

    |

  15. The equation (x^(2)-a^(2))^(2)+(y^(2)-b^(2))^(2)= represent points whi...

    Text Solution

    |

  16. The equation x^(2)+y^(2)+4x+6y+13= 0 represents

    Text Solution

    |

  17. The locus of a point which divides the join of A(-1, 1) and a variable...

    Text Solution

    |

  18. If the two circles x^(2)+y^(2)+2gx+c=0 and x^(2)+y^(2)-2fy-c=0 have eq...

    Text Solution

    |

  19. The locus of the point which moves such that the sum of the squares of...

    Text Solution

    |

  20. The radius of the circle passing through the point (6, 2) and two of w...

    Text Solution

    |