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The solution of the differential equation 0 ) 1 ( y , y x 3 y 3 x dx dy 2 2 2 2             

1. 0 ) y x ( xy | y x | log 2 e    
2. 0 ) y x ( xy 2 | y x | log 2 e    
3. 0 ) y x ( xy | y x | log 2 e    
4. 0 ) y x ( xy 2 | y x | log 2 e    

Correct answer: 0 ) y x ( xy 2 | y x | log 2 e    

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