Photos X Y DX

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X y dx. (XY^2+X)DX-(Y-X^2y)dy=0. X^2dy=y^2dx. X^2dx=3y^2dy. (X^2-3xy)DX-(4+3x^2/2)dy=0.
(XY^2+X)DX-(Y-X^2y)dy=0. X^2dy=y^2dx. X^2dx=3y^2dy. (X^2-3xy)DX-(4+3x^2/2)dy=0.

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