diff-equation

Question: An integrating factor for the differential equation $(1+{{y}^{2}})dx-({{\tan }^{-1}}y-x)dy=0$



1) ${{\tan }^{-1}}y$
2) ${{e}^{{{\tan }^{-1}}y}}$
3) $\frac{1}{1+{{y}^{2}}}$
4) $\frac{1}{x(1+{{y}^{2}})}$
Solution: Explanation: No Explanation
Linear differential equations

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