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Answers for “在标准形式 y' + (1/x)y = sin x 中，P(x) 和 Q(x) 是什么？”

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First, rearrange the terms to isolate the dy term: xdy = -(y - x sin x)dx. Divide both sides by dx and then by x to get $dy/dx = -(y - x \sin x)/x$ .

Conditions: The equation is a first-order differential equation.; x is not equal to zero, allowing division by x.