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The differential equation representing t...

The differential equation representing the family of curves `y=A cos (x+B)`, where A and B are parameters, is

A

`(d^(2)y)/(dx^(2)) - y = 0 `

B

`(d^(2)y)/(dx^(2))+y = 0 `

C

`(d^(2)y)/(dx^(2)) = 0 `

D

`(d^(2)x)/(dy^(2)) = 0 `

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The correct Answer is:
B
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PREMIERS PUBLISHERS-ORDINARY DIFFERENTIAL EQUATIONS -SOLUTION TO EXERCISE 10.9
  1. The order and degree of the differential equation (d^(2)y)/(dx^(2))+((...

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  2. The differential equation representing the family of curves y=A cos (x...

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  3. The order and degree of the different equation sqrt(sinx)(dx+dy)=sqrt(...

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  4. The order of the differential equation of all circles with centre at (...

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  5. The differential equation of the family of curves y=Ae^(x)+be^(-x), wh...

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  6. The general solution of the differential equation (dy)/(dx)=(y)/(x) is

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  7. The solution of the differential equation 2x(dy)/(dx)-y=3 represents

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  8. The solution of (dy)/(dx)+p(x)y=0 is

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  9. The integrating factor of the differential equation (dy)/(dx)+y=(1+y)/...

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  10. The integrating factor of the differential equation (dy)/(dx)+P(x)y=Q(...

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  11. The degree of the differential equation y(x)=1+(dy)/(dx)+(1)/(1.2)((dy...

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  12. If p and q are the oder and degree of the differential equation y(dy)/...

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  13. The solution of the differential equation (dy)/(dx)+(1)/(sqrt(1-x^(2))...

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  14. The solution of the differential equation (dy)/(dx)=2xy is

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  15. The general solution of the differential equation log((dy)/(dx))=x+y i...

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  16. The solution of (dy)/(dx)=2^(y-x) is

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  17. The solution of the differential equation (dy)/(dx)=(y)/(x)+(phi((y)/(...

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  18. If sinx is the integrating factor of the linear differential equation ...

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  19. The number of arbitrary constants in the general solutions of order n ...

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  20. The number of arbitrary constants in the particular solution of a diff...

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