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题目内容
（2024年国家开放大学答案）
用分部积分法求不定积分<img align="middle" alt="" src="/api/uploads/60000061862/in-rich-contentcreated_at=1648696601">，则下列步骤中正确的是（ ）．(单选题)
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.<img align="middle" alt="" src="/api/uploads/60000061864/in-rich-contentcreated_at=1648696601">
.<img align="middle" alt="" src="/api/uploads/60000061865/in-rich-contentcreated_at=1648696601">
.<img align="middle" alt="" src="/api/uploads/60000061866/in-rich-contentcreated_at=1648696601">
.<img align="middle" alt="" src="/api/uploads/60000061863/in-rich-contentcreated_at=1648696601">
.<img align="middle" alt="" src="/api/uploads/60000061864/in-rich-contentcreated_at=1648696601">
.<img align="middle" alt="" src="/api/uploads/60000061865/in-rich-contentcreated_at=1648696601">
.<img align="middle" alt="" src="/api/uploads/60000061866/in-rich-contentcreated_at=1648696601">
参考答案
