5m Zen
X2 2y2 dx dy xy
X2 2y2 dx dy xy pictures 5
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X2 2y2 dx dy
X2 2y2 dx dy xy
xy 2y2 dx x2 3xy dy 0
x2 u2212 2y2 dx xy dy 0
dx x2 2y2 dy /- xy dz xz
solve xy dx x2 2y2 dy 0
x2 2y2 dx dy xy y ( 1 1
x2 2y2 dx dy xy
x2 2y2 dx dy xy y u2212 1 3
x2 2y2 dx dy xy y u2212 1 2
