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solution of the differential equation xd...

solution of the differential equation `xdy-ydx=sqrt(x^2+y^2 )dx` is

A

`y-sqrt(x^2+y^2)=cx^2`

B

`y+sqrt(x^2+y^2)=cx^2`

C

`y+sqrt(x^2+y^2)+cx^2=0`

D

None of these

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The correct Answer is:
B
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