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第二类换元法求∫√ x2-a2dx(a＞0)时，合适的代换是
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第二类换元法求∫√ x2-a2dx(a＞0)时，合适的代换是
A、x=a sec t
时间：2021-09-01 20:09
关键词：
青书学堂
黑龙江省教育学院
高等代数（高起专）
答案解析
A
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第二类换元法求∫√x^2-a^2dx(a>0)时，合适的代换是
第二类换元法求∫√ x2-a2dx(a＞0)时，合适的代换是
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