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The directrix of the parabola x^2-4x-8y ...

The directrix of the parabola `x^2-4x-8y + 12=0` is

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Find the equation of the directrix of the parabola x^2-4x-3y+10=0 .

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Find the focus and directrix of the parabola 3x^2 + 12x + 8y=0 .

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If the line x-1=0 is the directrix of the parabola y^2-k x+8=0 , then one of the values of k is 1/8 (b) 8 (c) 4 (d) 1/4

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RD SHARMA ENGLISH-ELLIPSE-All Questions
  1. If a latus rectum of an ellipse subtends a right angle at the centre o...

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  2. For the ellipse 12 x^2+4y^2+24 x-16 y+25=0 a.centre is (-1,2) b. leng...

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  3. The directrix of the parabola x^2-4x-8y + 12=0 is

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  4. The equation of the ellipse with focus (-1,1) directrix x-y+3=0 and ec...

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  5. The equation of the circle drawn with the two foci of x^2/a^2+y^2/b^2...

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  6. If the latus rectum of an ellipse is equal to the half of minor axis, ...

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  7. The eccentricity of the ellipse if the distance between the foci is ...

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  8. The eccentricity of ellipse, if the distance between the foci and ...

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  9. The difference between the lengths of the major axis and the latus r...

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  10. The eccentricity of the conic 9x^2+25 y^2=225 is a.2//5 b.4//5 c. 1//3...

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  11. The latus rectum of the conic 3x^2+4y^2-6x+8y-5=0 is a.3 b. (sqrt(3))/...

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  12. Find the equations of the tangents drawn from the point (2, 3) to t...

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  13. The eccentricity of the ellipse 4x^2+9y^2+8x+36 y+4=0 is a.5/6 b. 3/5 ...

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  14. The eccentricity of the ellipse 4x^2+9y^2=36 is a.1/(2sqrt(3)) b. 1/...

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  15. The eccentricity of the ellipse 5x^2+9y^2=1 is a.2//3 b. 3//4 c. 4//5 ...

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  16. For the ellipse x^2+4y^2=9 a. the eccentricity is 1/2 b. the latus...

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  17. If the latus rectum of an ellipse is equal to the half of minor axis, ...

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  18. An ellipse has its centre at (1,-1) and semi major axis =8 and it pass...

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  19. Find the sum of the focal distances of any point on the ellipse 9x^...

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  20. If (2,4) and (10,10) are the ends of a latus rectum of an ellipse with...

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