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y=x-ln(1+e^x)的微分速度跪求!
人气:271 ℃ 时间:2020-05-03 08:23:06
解答
dy=d(x-ln(1+e^x))
=dx-d(ln(1+e^x))
=dx-d(1+e^x)/(1+e^x)
=dx-e^xdx/(1+e^x)
=dx/(1+e^x)
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