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If alpha, beta are the roots of the quad...

If `alpha, beta` are the roots of the quadratic equation `ax^(2)+bx+c=0` and `3b^(2)=16 ac` then

A

`alpha = 4beta` or `beta = 4alpha`

B

`alpha =-4beta` or `beta = -4alpha`

C

`alpha = 3beta` or `beta = 3alpha`

D

`alpha = -3 beta` or `beta = -3alpha`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2013-MULTIPLE CHOICE QUESTIONS
  1. In the set of all 3xx3 real matrices a relation is defined as follows....

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  2. The number of lines which pass through the point (2, -3) and are a dis...

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  3. If alpha, beta are the roots of the quadratic equation ax^(2)+bx+c=0 a...

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  4. For any two real numbers a and b, we define a R b if and only if sin^(...

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  5. Let n be a positive even integer. The ratio of the largest coefficient...

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  6. Let exp (x) denote the exponential function e^(x). If f(x)=exp(x^((1)/...

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  7. The sum of the series (1)/(1xx2)""^(25)C(0)+(1)/(2xx3)""^(25)C(1)+(1)...

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  8. Five numbers are in A.P, with common difference ne 0. If the 1^(st), 3...

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  9. The minimum value of the function f(x)=2|x-1|+|x-2| is

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  10. If P, Q, R are angles of an isoseles triangle and angle P = (pi)/(2), ...

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  11. A line passing through the point of intersection of x+y=4 and x-y=2 ma...

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  12. Let [a] denote the greatest integer which is less than or equal to a. ...

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  13. If P=((2,-2,-4),(-1.3,4),(1,-2,-3)), then P^(5) equals.

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  14. If sin^(2)theta+3cos theta=2, then cos^(3)theta + sec^(3)theta is

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  15. Let x=1+(1)/(2xx|ul(1))+(1)/(4xx|ul(2))+(1)/(8xx|ul(3))+……. and y=...

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  16. The value of the infinite series (1^(2)+2^(2))/(|ul(3))+(1^(2)+2^(2)+3...

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  17. The value of the integral int((pi)/(6))^((pi)/(3))((sin x-x cos x))/(x...

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  18. Let f(x)=x((1)/(x-1)+(1)/(x)+(1)/(x+1)), x gt 1. Then

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  19. Let F(x)=int(0)^(x)(cos t)/((1+t^(2)))dt, 0 le x le 2 pi. Then

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  20. Find the area of the region bounded by the curve y = x^(2) and the lin...

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