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微分方程y′+3y″+2y=ex的一个特解是_______ 。
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微分方程y′+3y″+2y=ex的一个特解是_______ 。
时间:2021-09-08 15:41
关键词:
青书学堂
西南石油大学高等数学
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1/6 ex,
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