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If y=(1)/(1+x+x^(2)+x^(3)), then the val...

If `y=(1)/(1+x+x^(2)+x^(3))`, then the value of `(d^(2)y)/(dx^(2))` at `x=0` is -

A

`(9)/(4)`

B

`-(9)/(4)`

C

`(9)/(8)`

D

`-(9)/(8)`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2007-MULTIPLE CHOICE QUESTIONS
  1. lim(x to oo)(1+(1)/(x))^(x//2) is equal to

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  2. The value of lim(n to oo) [(n!)/(n^(n))]^((1)/(n)) is equal to -

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  3. If y=(1)/(1+x+x^(2)+x^(3)), then the value of (d^(2)y)/(dx^(2)) at x=...

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  4. Three integers form an increasing G.P. If the third number is decrease...

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  5. The probability that 3 students can solve a mathematics problem indepe...

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  6. The sum of first n terms of a series is 3^(n)(a+b) when a, b are const...

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  7. A and B are subsets of the universal set uu such that n (uu)=800, n(A)...

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  8. If x^(2)+y^(2)=1, the minimum and maximum values of x+y are

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  9. Let f(x)=a^(x)(a gt 0) be written as f(x)=g(x)+h(x), when g (x) is an ...

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  10. A=[(-i,0),(0,i)] then A^(T)A= (where I is 2xx2 identity matrix)

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  11. Show that ,the maximum value of ((1)/(x))^(x) is e^((1)/(e)

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  12. The value of the integeral int(-pi//7)^(pi//7)x^(3) cos^(2)x dx is

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  13. The sum of the series 1+(1)/(3.9)+(1)/(5.81)+(1)/(7.729)+……. to oo is

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  14. Using integration find the area of the region bounded by the parabola ...

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  15. If m and n denote respectively the order and degree of a differential ...

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  16. A particle is moving along the x - axis in such a way that it has disp...

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  17. The identity mapping I(c ) : S to S is defined as I(s)(x)=x for x in S...

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  18. If z = x + iy and arg ((z-1)/(z+1))=(pi)/(4), then the locus of (x, y)...

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  19. Solve the equation (dy)/(dx)+y/x=x^2

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  20. A partiole is moving in a straight line such that its velocity at time...

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