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問題

求微分方程dy/dx +y=e-x的通解.

參考答案
正確答案:此為一階線性微分方程其中P(x)=1Q(x)=e-x故微分方程的通解
此為一階線性微分方程,其中P(x)=1,Q(x)=e-x,故微分方程的通解
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