`xdx +(xdy-ydx)/(x^(2)+y^(2))=0` का हल हैA. `(x^(2))/(2)+t – InterviewSolution

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1.	`xdx +(xdy-ydx)/(x^(2)+y^(2))=0` का हल हैA. `(x^(2))/(2)+tan^(-1)""(x)/(y)=k`B. `(x^(2))/(2)+tan^(-1)""(y)/(x)=k`C. `(x^(2))/(2)-tan^(-1)""(x)/(y)=k`D. `(x^(2))/(2)-tan^(-1)""(y)/(x)=k`
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