1.

The solution of the differential equation, \[y\,dx+(x+{{x}^{2}}y)dy=0\] is              [AIEEE 2004]

A.                 \[\log y=cx\]          
B.                 \[-\frac{1}{xy}+\log y=c\]
C.                 \[-\frac{1}{xy}+\log y=c\]  
D.                 \[-\frac{1}{xy}+\log y=c\]
Answer» C.                 \[-\frac{1}{xy}+\log y=c\]  


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