My friend,you'r great,a>e^(1/e) An is divergent. Why?Because...

來源: 於 2011-01-18 17:57:16 [舊帖] [給我悄悄話] 本文已被閱讀：次

y=a^x,y'=lna*a^x;y=x,y'=1;we have lna*a^x=1 and a^x=x,...lna*a^(1/lna)=1,...a=e^(1/e)=1.444667861...

Good noght.