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I .F. for y in y dx/dy + x - ln y=0 is...

I .F. for y in `y dx/dy + x - ln y=0` is

A

`lnx`

B

`lny`

C

`lnxy`

D

none of these

Text Solution

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The correct Answer is:
B
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FIITJEE-TIPS-ASSIGNMENT (SECTION (I): MCQ (SINGLE CORRECT)
  1. The solution of the differential equation log(dy/dx)=4x-2y-2,y=1 ,wher...

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  2. If y=x/(In|cx|) (where c is an arbitrary constant) is the general solu...

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  3. I .F. for y in y dx/dy + x - ln y=0 is

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  4. Which of the following is a differential equation of the family of cur...

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  5. Which of the following transformations reduce the differential equatio...

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  6. Solution of differential equation (dy)/(dx)=sin(x+y)+cos(x+y) is

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  7. y=ae^(-(1)/(x))+b is a solution of (dy)/(dx)=(y)/(x^(2)) when

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  8. Let f(x)=(2x-pi)^3+2x-cosx ,"T h e n ,"d/(dx)[f^(- 1)(x)] at x=pi is ...

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  9. If X and Y are two sets, then X nn (Y uu X)^(c ) equals

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  10. If the sets A and B are defined are defined as A={(x,y):y=e^x, x in R}...

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  11. Set A and B have 4 and 6 elements respectively. The maximum number of ...

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  12. Let A={a, b, d, e}=B={c, d, f, m}, C={a, l, m, o}. Then C nn(Auu B) wi...

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  13. Let n(U) = 700, n(A) = 200, n(B) = 300 and n(AuuB) = 400. Then n(A^c u...

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  14. A-B is equal to

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  15. If the sets A and B are defined are defined as A={(x,y):y=e^x, x in R}...

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  16. Let A={(x, y)|y=e^(x), x in R} and B={(x, y)|=e^(-x), x in R}. Then

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  17. Suppose A(1), a(2),…….,A(30) are thirty sets each with five elements a...

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  18. Consider the set A of all determinants of order 3 with entries 0 or 1 ...

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  19. If 1/1^2+1/2^2+1/3^2....oo=pi^2/6 then 1/1^2+1/3^2+1/5^2....=

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  20. The sum to infinity of the series 1+2(1-(1)/(n))+3(1-(1)/(n))^(2)+ ....

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