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The integrating factor of the differenti...

The integrating factor of the differential equation `xlogx(dy)/(dx)+y=2logx` is given by

A

`e^(x)`

B

`logx`

C

`log(logx)`

D

x

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2009-MULTIPLE CHOICE QUESTIONS
  1. The general solution of the differential equation dy/dx = e^(y+x) + e^...

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  2. Product of any r consecutive natural numbers is always divisible by

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  3. The integrating factor of the differential equation xlogx(dy)/(dx)+y=2...

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  4. If x^(2)-y^(2)=1 then

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  5. If c(0),c(1),c(2)..........c(n) denote the co-efficients in the expans...

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  6. A polygon has 44 diagonals. The number of its sides is

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  7. If alpha,beta be the roots of x^(2)-a(x-1)+b=0 then the value of (1)/(...

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  8. The angle between the lines joining the foci of an ellipse to one part...

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  9. The order of the differential equation (d^(2)y)/(dx^(2))=sqrt(1+((dy)/...

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  10. The sum of all real of the equation |x-2|^(2)+|x-2|-2=0 is

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  11. If int(-1)^(4)f(x)dx=4 and int(2)^(4){3-f(x)}dx=7 then the value of in...

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  12. For each ninN,2^(3n)-1 is divisible by

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  13. The Rolle's theorem is applicable in the interval -1lexle1 for the fun...

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  14. The distance covered by a particle in t seconds is given by x=3+8t-4t^...

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  15. If agt0 and coefficients of x^5 and x^(15) in the expansion of (x^2+a/...

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  16. The value of ((1)/(log(3)12)+(1)/(log(4)12)) is

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  17. If x=log(a)bc,y=log(b)ca,z=log(c)ab, then the value of (1)/(1+x)+(1)/(...

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  18. Find the approximate value of sin62^(@), correct to 3 places of decima...

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  19. The rate of increase of a side of a square is 1 cm/sec. The rate of in...

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  20. The quadratic equation whose roots are three times the roots of 3ax^(2...

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