求极限lim (1+x/1-x)^1/x 趋近于0
问题描述:
求极限lim (1+x/1-x)^1/x 趋近于0
答
lim[(1+x)/(1-x)]^(1/x)
=lim[1+ 2x/(1-x)]^(1/x)
=lim﹛[1+ 2x/(1-x)]^[(1-x)/2x]﹜^[2/(1-x)]
=lime^[2/(1-x)]
=e²