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For the curve x^(2)+4xy+8y^(2)=64 the ta...

For the curve `x^(2)+4xy+8y^(2)=64` the tangents are parallel to the x-axis only at the points

A

`(0,2sqrt(2))` and `(0,-2sqrt(2))`

B

`(8,-4)` and `(-8,4)`

C

`(8sqrt(2),-2sqrt(2))` and `(-8sqrt(2),2sqrt(2))`

D

(8, 0) and `(-8, 0)`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2013-MULTIPLE CHOICE QUESTIONS
  1. The value of the determinant |(1+a^(2)-b^(2),2ab,-2b),(2ab,1-a^(2)+b^...

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  2. If the distance between the foci of an ellipse is equal to length of t...

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  3. For the curve x^(2)+4xy+8y^(2)=64 the tangents are parallel to the x-a...

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  4. The value of I=int(0)^((pi)/(4))(tan^(n+1)x)dx+(1)/(2)int(0)^((pi)/(2)...

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  5. Let f(theta)=(1+sin^(2)theta)(2-sin^(2)theta). Then for all values of ...

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  6. Let f(x)={{:(x^(3)-3x+2", "xlt2),(x^(3)-6x^(2)+9x+2", " x ...

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  7. The limit of sum(n=1)^(1000)(-1)^(e )x^(e ) as x to oo

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  8. If f(x)=e^(x)(x-2)^(2) then

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  9. Let f:R to R be such that f is injective and f(x)f(y)=f(x+y) for all x...

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  10. The number of solutions of the equation (1)/(2)log(sqrt(3))((x+1)/(x+5...

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  11. The area of the region bounded by the parabola y=x^(2)-4x+5 and the st...

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  12. The value of the integral int(1)^(2)e^(-x)(log(e )x+(x+1)/(x))dx is

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  13. Let P=1+(1)/(2xx2)+(1)/(3xx2^(2))+ …………. and Q=(1)/(1xx2)+(1)/(3xx4...

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  14. Let f(x)=sin x + 2 cos^(2)x, (pi)/(4)le x le (3pi)/(4). Then f attains...

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  15. Each of a and b can take value 1 or 2 with probability. The probabilit...

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  16. There are two coins, one unbiased with probability (1)/(2) of getting ...

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  17. For the variable t, the locus of the points of intersection of lines 3...

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  18. Cards are drawn one - by - one without replacement from a well shuffle...

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  19. Lines x+y=1 and 3y=x+3 intersect the ellipse x^(2)+9y^(2)=9 at the poi...

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  20. The number of onto functions from the set {1, 2, ……….,11} to the set {...

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