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The solution of cos(x + y) dy = dx is...

The solution of `cos(x + y) dy = dx` is

A

`tan ((x+y)/2)=y+c`

B

`tan ((x+y)/2)=x+c`

C

`cot ((x+y)/2)=y+c`

D

`cot ((x+y)/2)=x+c`

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The correct Answer is:
A
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TARGET PUBLICATION-DIFFERENTIAL EQUATIONS -COMPETITIVE THINKING
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  3. The solution of cos(x + y) dy = dx is

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  4. The general solution of differential equation (dx) /( dy) = co...

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  5. The solution of the differential equation (dy)/(dx)="tan"((y)/(x))+(y)...

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  6. The solution of the equation (dy)/(dx)=(x+y)/(x-y), is

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  7. Show that the differential equation (dy)/(dx) = y^2/ (xy - x^2) is ho...

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  8. The general solution of the differential equation (x^2+xy)y'=y^2 is

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  9. The solution of the differential equ (x^2 + y^2) dx = 2 xy dy is-

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  10. The general solution of differential equation dy/dx=(x+y)/(x-y) is

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  11. If any differentisl equation in the form f(f(1)(x,y)d(f(1)(x,y)+phi(...

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  12. The solution of the differential equation y"dy"/"dx"=x[y^2/x^2 + (phi(...

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  13. Solution of the differential equation (1+e^(x/y))dx + e^(x/y)(1-x/y)dy...

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  14. Solution of the differential equation y cos\ y/x (x dy-y dx)+xsin\ y/x...

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  15. The slope of the tangent at (x , y) to a curve passing through a po...

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  16. Integrating factor of x(dy)/(dx) - y = x^(4) - 3x is

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  17. The integrating factor of the differential equation x.(dy)/(dx)+2y=x^2...

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  18. The integrating factor of the differential equation (1+x^2)(dy)/(dx)+y...

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  19. Integrating factor of differential equation cosx(dy)/(dx)+ysinx=1 is (...

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

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