5m Zen
X3 y3 dx
X3 y3 dx pictures 5
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X3 y3
X3 y3 dx
dy dx x3 y3 xy
x3 y3 dy x2y dx
find dy dx x3 y3 3axy
dy dx x3 y3 xy2
x2y dx x3 y3 dy 0
x3 y3 dx xy2dy 0
x3 y3 dx 3xy2dy 0
