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Forum URL: http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name: College math
Topic ID: 265
Message ID: 0
#0, Prove that e is irrational
Posted by William on May-29-02 at 02:46 PM
Prove that e-(1+1/1!+1/2!+1/3!+.......+1/n!)<1/(n!n) for all natural number n.

Hence prove that e is an irrational number !

Anyone could help ?
Thaks