Which of the following equation is linear

1.	Which of the following equation is linear
A.	\[\frac{dy}{dx}+x{{y}^{2}}=1\]
B.	\[{{x}^{2}}\frac{dy}{dx}+y={{e}^{x}}\]
C.	\[\frac{dy}{dx}+3y=x{{y}^{2}}\]
D.	\[x\frac{dy}{dx}+{{y}^{2}}=\sin x\]
Answer» C. \[\frac{dy}{dx}+3y=x{{y}^{2}}\]

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Which of the following equation is linear

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