1(e^x-1)=1x-12+(112)x+o(x) x趋近于0 2015亚洲天团排名第二是e x o

1(e^x-1)=1x-12+(112)x+o(x) x趋近于0 x趋于0lim[1(e^x-1)-1x+12-(112)x]x=lim[12x+(6x-12-x^2)(e^x-1)]12x^2(e^x-1)=lim[12+(6-2x)(e...