51问答网 > 高等数学 不定积分 求解∫1⼀√(x눀+1)대 dx

高等数学 不定积分 求解∫1⼀√(x눀+1)대 dx

2025-03-16 18:00:11
推荐回答（2个）
回答1：

令 x = tanu, 则 dx = (secu)^2du
I = ∫(secu)^2du/(secu)^3 = ∫ cosu du
= sinu + C = x/√(1+x^2) + C

回答2：

积分表上有公式
要过程请追问

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