5m Zen
2xy dx
2xy dx pictures 5
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2xy dx
dy dx 2xy 0
dy dx 2xy y
dy dx 2xy x
x^2 dy/dxu003d2xy+y^2
d 2xy )/ dx
integration of 2xy dx
x^2 dy/dx+2xyu003d0
2xy dx dy
2xy dx
2xydx+(y^2-x^2)dyu003d0 exact de
