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Questions  

 The solution of differential equation xdyydxx2+y2+tan1xy3(xdy+ydx)=0 is 

a
tan−1yx=ke−xy
b
−12tan−1yx2+xy+c
c
tan−1xy=kexy
d
−12tan−1yx2−xy+c

detailed solution

Correct option is B

dtan−1⁡yxtan−1⁡yx3+d(xy)=0 Integrating both sides −12tan−1⁡yx2+xy=c

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