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Focii of the curve xy = -4 are...

Focii of the curve xy = -4 are

A

` (sqrt2, -sqrt2 ) (-sqrt2, - sqrt2) `

B

` (2sqrt2 , -2sqrt2) , ( -2sqrt2, -2sqrt2) `

C

` (-2sqrt2, 2sqrt2) , ( 2sqrt2,-2sqrt2) `

D

` (-sqrt3, sqrt3)(sqrt3,-sqrt3) `

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-REVISION EXERCISE -HYPERBOLA
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  2. The length of the semi treansverse axis of the rectangular hyperbola x...

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  3. Focii of the curve xy = -4 are

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  4. Length of the principal axis of the hyperbola xy= 32 is

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  5. If (xi yi) ,i =1,2,3,4 are concylic points on xy= 4 then x1x2x3x4 =

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  6. If (xi yi) ,i = 1,2,3,4 are concyclic points on xy=c^(2) and if y1. ...

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  7. The locus a point P ( alpha , beta) moving under the condition that ...

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  8. The auxiliary circle of the hyperbola xy=9 is:

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  9. If a hyperbola has one focus at the origin and its eccentricity is sqr...

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  10. If a hyperbola has one focus at the origin and its eccentricity is sqr...

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  11. The point of intersection of the asymptotes with the directrices lie o...

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  12. If a hyperbola passing through the origin has 3x-4y -1=0 and 4x -3y -6...

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  13. The eccentricity of the hyperbola 3x^(2) +7xy +2y^(2) -11x -7y +10 ...

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  14. If H(x,y) =0 represents the equation of a hyperbola and A( x,y ) =0 ,...

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  15. The equation of a hyperbola conjugate to the hyperbola 2x^(2) +3xy -2y...

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  16. The equation to the conjugate hyperbola of xy+ 3x- 4y +13=0 is

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  17. A = (1,2) , B= ( 6,-10 ) locus of P such that PA- PB =13 is

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  18. s= 0 is a hyperbola , if s+ k =0 (k is a real number ) represents eq...

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  19. If the distances between two parallel tangents drawn to the hyperbola ...

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  20. A tangent drawn to hyperbola (x^(2))/( a^(2)) -(y^(2))/( b^(2)) =1 a...

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