The solution of differential equation dydx+2xy1+x2=1(1+x2)2 is (a) y( – InterviewSolution

1.	The solution of differential equation dydx+2xy1+x2=1(1+x2)2 is (a) y(1+x2)=C+tan−1x (b) y1+x2=C+tan−1x (c) ylog(1+x2)=C+tan−1x (d) y(1+x2)=C+sin−1x
Answer» The solution of differential equation $\frac{d y}{d x} + \frac{2 x y}{1 + x^{2}} = \frac{1}{(1 + x^{2})^{2}}$ is (a) $y (1 + x^{2}) = C + t a n^{- 1} x$ (b) $\frac{y}{1 + x^{2}} = C + t a n^{- 1} x$ (c) $y l o g (1 + x^{2}) = C + t a n^{- 1} x$ (d) $y (1 + x^{2}) = C + s i n^{- 1} x$

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