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Questions  

 The solution of the D.E 2y+xy3dx+x+x2y2dy=0 is 

a
x2y+x3y33=C
b
xy2+x3y33=C
c
x2y+x4y44=C
d
x2y-x3y33=C

detailed solution

Correct option is A

(2ydx+xdy)+xy3dx+x2y2dy=0 Multiplying by x2xydx+x2dy+x2y3dx+x3y2dy=02xy+x2dydx+x2y3+x3y2dydx=0→dx2y+13dx3y3=0→∫dx2y+13∫dx3y3=0→x2y+x3y33=C

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