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If (1,-2) is a limiting point of a coax...

If (1,-2) is a limiting point of a coaxal system of which the circle
` x^(2) + y^(2) - x - 2y - 1 = 0 ` is a member , then the equation of a circle of the system passing through origin is

A

`6x^(2) +6y^(2) - 7x - 6y = 0 `

B

`16x^(2) + 16y^(2) - 17x - 16y = 0 `

C

`x^(2) + y^(2) - 7x - 6y = 0 `

D

`6x^(2) + 6y^(2) + 7x + 6y = 0 `

Text Solution

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-SYSTEM OF CIRLES -EXERCISE 1
  1. If (2,3)is one limiting point of a coaxal system of circles whose comm...

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  2. If (3,2) is one limiting point of a coaxal system of circles whose com...

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  3. If (1,2) is a limiting point of the coaxal system of circles containin...

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  4. Two circles x^(2) + y^(2) - 2x + 6y + 6 = 0 " and " x^(2) + y^(2) - 5...

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  5. If x^(2) + y^(2) - 4x - 2y + 5 = 0 " and " x^(2) + y^(2) - 6x - 4y - ...

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  6. The coaxal system having limiting points (2,3), - (-3,2) is

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  7. A circle of the coaxal system with limiting points (0,0) and (1,0) is

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  8. The equation of the circle belonging to the coaxal system of which (1,...

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  9. The equation of the circle belonging to the coaxal system of which (2,...

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  10. If (1,-2) is a limiting point of a coaxal system of which the circle ...

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  11. The equation of the circle touching the line 3x - 4y - 15 = 0 and be...

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  12. The equation of the circle having a radius 2 and passing through the l...

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  13. The equation of the circle belonging to the coaxal system having limit...

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  14. P (-2,-1) and (0,-3) are the limiting points of a coaxial system of wh...

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  15. The conjugate system of the coaxal system x^(2) + y^(2) + 2ax + 2by...

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  16. The coaxal system which is orthogonal to the coaxal system x^(2) +...

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  17. The system of circle orthogonal to x^(2) + y^(2) + 2gx + 10 = 0 is

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  18. If (-2,-1) is a limiting point of a coaxal system of which x^(2) +...

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  19. If the origin is the limiting point of a system of coaxal of which ...

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  20. If (1,2) ,(4,3) are the limiting points of a coaxal system , then the ...

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