Question:
Mark $(\sqrt{)}$ against the correct answer in the following:
The solution of the $\mathrm{DE} \frac{\mathrm{dy}}{\mathrm{dx}}=\frac{-2 \mathrm{xy}}{\left(\mathrm{x}^{2}+1\right)}$ is
A. $y^{2}(x+1)=C$
B. $y\left(x^{2}+1\right)=C$
C. $x^{2}(y+1)=C$
D. None of these
Solution:
