回复:回复:thanks. I am just curious.

来源: 2010-01-04 15:54:38 [旧帖] [给我悄悄话] 本文已被阅读:

You are right. We have to use proof by contridiction to prove it : let e^x=a , x and a are rational,x=p/q,we have e=a^q/p,but a^q/p is algebraic number.End.I think this is not easy for most people.