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The equations of the directrices of the ...

The equations of the directrices of the ellipse `25x^(2)+9y^(2)-150x-90y+225=0`

A

`4y+5=0, 4y-45=0`

B

`4y+35=0, 4y-15=0`

C

`4y+35=0, 4y-25=0`

D

`4x-35=0, 4x+35=0`

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DIPTI PUBLICATION ( AP EAMET)-ELLIPSE-EXERCISE 1A
  1. An ellipse passing through (4sqrt(2), 2sqrt(6)) has foci at (-4, 0) a...

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  2. The eccentricity of the ellipse which meets the straight line x//7+y//...

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  3. The equations of the directrices of the ellipse 25x^(2)+9y^(2)-150x-90...

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  4. The equations of the latus recta of the ellipse 9x^(2) + 25y^(2) - 36x...

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  5. Equations of the latus recta of the ellipse 9x^(2)+4y^(2)-18x-8y-23=0 ...

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  6. The equation of the axes of the ellipse 25x^(2)+9y^(2)-150x-90y+225=0 ...

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  7. If P is a point on the ellipse x^(2)/a^(2)+y^(2)/b^(2)=1 whose foci ar...

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  8. If P is a point on the ellipse 9x^(2)+36y^(2)=324 whose foci are S and...

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  9. If P(x,y), S(3,0), S^(')(-3,0) " and "16x^(2)+25y^(2)=400, " then "PS+...

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  10. If P is a point on the ellipse x^(2)/a^(2)+y^(2)/b^(2)=1 whose foci ar...

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  11. If pi+theta is the eccentric angle of a point on the ellipse 16x^(2)+2...

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  12. If S and S'' are the foci of the ellipse (x^(2))/(25) + (y^(2))/(16) =...

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  13. A man running round a race course notes that the sum of the distances ...

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  14. P is a variable point on the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1...

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  15. The sides of the rectangle of greatest area that can be inscribed in t...

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  16. The equation x^(2)/(r-2)+y^(2)/(5-r)= 1 represents an ellipse if

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  17. Let E be the ellipse x^(2)//9+y^(2)//4=1 and C be the circle x^(2)+y^(...

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  18. The equation of the circle passing through the foci of the ellipse x^(...

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  19. The equation of the tangent to the ellipse 3x^(2)+2y^(2)=30 at (-2, 3)...

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  20. The equation of the normal to the ellipse x^(2)/4+y^(2)/1=1 at (2, -1)...

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