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If question of the ellipse whose focus i...

If question of the ellipse whose focus is (1,-1), then directrix the line x-y-3=0 and eccentricity `1/2` is

A

`7x^(2) + 2xy + 7y^(2) - 10x + 10y + 7 = 0 `

B

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

C

`7x^(2) + 2xy + 7y^(2) + 10x - 10y - 7 = 0 `

D

none of these.

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MODERN PUBLICATION-CONIC SECTIONS -OBJECTIVE TYPE QUESTIONS (MULTIPLE CHOICE QUESTIONS )
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  2. Find the equation of the lines joining the vertex of the parabola y...

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  3. If question of the ellipse whose focus is (1,-1), then directrix the l...

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  4. The lenth of the latus rectum of the ellipse 3x^2+y^2=12 is :

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  5. If e is the eccentricity of the ellipse (x^(2))/(a^(2)) + (y^(2))/(b^(...

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  6. The equation of the ellipse whose centre is at origin and which passes...

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  7. The eccentricity of the hyperbola whose latuscrectum is 8 and conjugat...

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  8. If the distance between the foci of a hyperbola is 16 and its eccen...

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  9. The length of the transverse axis of a hyperbola is 7 and it passes th...

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  10. Equation of the hyperbola with eccentricity 3/2 and foci at (±2,0) is

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  11. The equation of the chord joining the points (x(1) , y(1)) and (x(2), ...

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  12. The foci of the hyperbola (x^(2))/(16) -(y^(2))/(9) = 1 is :

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  13. Centre of the circle 2x^(2) + 2y^(2) -x = 0 is :

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  14. For the circle x^(2) + y^(2) = 25, the point (-2.5, 3.5) lies :

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  15. (i) Centre of the circle x^(2) + y^(2) - 8x + 10 y + 12 = 0 is Cen...

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  16. Length of the semi-latus -rectum of parabola : x^(2) = -16y is :

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  17. The focus of the parabola y^(2) = - 4ax is :

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  18. The length of latus-rectum of parabola x^(2) = - 16 y is :

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  19. The eccentricity of the ellipse (x^(2))/(a^(2)) +(y^(2))/(b^(2)) = 1 ...

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  20. If the slope of the line containg the point (2,5) and (x, - 4) is 3, t...

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