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y 2xy+e x dx-e xdy 0
xdy- y+2x2 dx 0
y x 2y+e x dx-e xdy 0
xdy- 1+x 2 dx dx
x 2dy+y x+y dx 0
xdydx+y 1y 2
y+x 3 dx-2xdy 0
x-y dx+xdy 0
y 6y 2-x-1 dx+2xdy 0
x 3dy+ xy-1 dx 0
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