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数学
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求y=In(x+根号(x^2+1)的反函数
请注明过程和ln与e之间的关系
人气:154 ℃ 时间:2019-12-21 15:17:20
解答
ln(e^t)=t
so e^y=x+sqrt(x^2+1)
e^-y=sqrt(x^2+1)-x
x=(e^y-e^-y)/2
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