diff-equation

Question: The differential equation for which ${{\sin }^{-1}}x+{{\sin }^{-1}}y=c$ is given by



1) $\sqrt{1-{{x}^{2}}}\,\,dx\,\,+\sqrt{1-{{y}^{2}}}\,\,dy=0$
2) $\sqrt{1-{{x}^{2}}}\,\,dy\,\,+\sqrt{1-{{y}^{2}}}\,\,dx=0$
3) $\sqrt{1-{{x}^{2}}}\,\,dy\,\,-\sqrt{1-{{y}^{2}}}\,\,dx=0$
4) $\sqrt{1-{{x}^{2}}}\,\,dx\,-\sqrt{1-{{y}^{2}}}\,\,dy=0$
Solution: Explanation: No Explanation
Formation of differential equations

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