微积分问题:求解,详细过程!!!
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发布时间:2024-10-21 13:36
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热心网友
时间:2024-11-13 12:58
lim[(x-1)/(x+1)]^x=lim{[1-2/(x+1)]^[-(x+1)/2]}^(-2)*[1-2/(x+1)]
=lim{[1-2/(x+1)]^[-(x+1)/2]}^(-2)*lim[1-2/(x+1)]
=e^-2
如果学过了幂积函数就更简单了
lim[(x-1)/(x+1)]^x=lim[1-2/(x+1)]^x=e^[lim-2x/(x+1)]=e^-2