5m Zen
X2 y2 dx
X2 y2 dx pictures 5
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X2 y2
X2 y2 dx
(yu221Ax2+y2)dx-xdyu003d0
xdy ydx u003d( x2 y2 dx
x2+y2 dx dyu003d0
x2 y2 dx 3xy dy 0
x2 y2 dx dy
x2+y2)dx+3xy dyu003d0
xy dy/dxu003dx2-y2
x2 y2 dx 2xydy
x2 y2 dx xydy 0
x2 y2 dx 2xy dy 0
