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问题

求微分方程dy/dx +y=e-x的通解.

参考答案
正确答案:此为一阶线性微分方程其中P(x)=1Q(x)=e-x故微分方程的通解
此为一阶线性微分方程,其中P(x)=1,Q(x)=e-x,故微分方程的通解
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