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Answers for “为什么项 -xy 在最终解中只包含一次?”

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The final implicit solution for the example equation (-3x^2 - y)dx+(3y2−x)dy=0dx + (3y^2 - x)dy = 0 is -x^3+y33 + y^3 - xy = C.

Conditions: The equation is exact.; The terms are combined correctly without double-counting.

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The steps involve finding the potential function F(x,y)F(x,y) by integrating M with respect to x and N with respect to y, then combining the results to form the implicit solution F(x,y)=CF(x,y) = C.

Conditions: The differential equation has been verified as exact.