diff-equation

Question: The equation of the curve that passes through the point $(1,\,2)$ and satisfies the differential equation $\frac{dy}{dx}=\frac{-2xy}{({{x}^{2}}+1)}$is

1) $y({{x}^{2}}+1)=4$

2) $y({{x}^{2}}+1)+4=0$

3) $y({{x}^{2}}-1)=4$

4) None of these

Solution:

Explanation: No Explanation

Miscellaneous differential equations

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