1.

The solution of the differential equation \[{{x}^{4}}\frac{dy}{dx}+{{x}^{3}}y+\text{cosec}\,(xy)=0\] is equal to [Pb. CET 2004]

A. \[2\cos \,(xy)+{{x}^{-2}}=c\]    
B. \[2\cos \,(xy)+{{y}^{-2}}=c\]
C. \[2\sin \,(xy)+{{x}^{-2}}=c\]     
D. \[2\sin \,(xy)+{{y}^{-2}}=c\]
Answer» B. \[2\cos \,(xy)+{{y}^{-2}}=c\]


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