回複：回複：thanks. I am just curious.

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.

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• your post is very convencing. Thanks again. -yma16- ♂ (0 bytes) () 01/04/2010 postreply 19:27:37