设y1(x),y2(x)为y’+P(x)y=Q(x)的特解,又py1(x)+2qy2(x)为y’+P(x)y=0的解,py1(x)一qy2(x)为y’+P(x)y=Q(x)的解,则p=_____,q=_______.

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问题 设y1(x),y2(x)为y’+P(x)y=Q(x)的特解,又py1(x)+2qy2(x)为y’+P(x)y=0的解,py1(x)一qy2(x)为y’+P(x)y=Q(x)的解,则p=_____,q=_______.

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答案[*]

解析 由一阶线性微分方程解的结构性质得
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