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Topic: RE: Induction
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wdwallis@lambert.math.siu.edu

Posts: 1
Registered: 7/1/08
RE: Induction
Posted: Jul 1, 2008 3:16 PM
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Could you use words (eg tex) instead of symbols? They don't translate.

I assume the left-hand side is
1*1! + 2*2! + ... + n*n!
The right-hand side involves (n+1)! but I can't guess what it is.

WDW



Original Message:
-----------------
From: Alex discussions@mathforum.org
Date: Tue, 01 Jul 2008 14:35:51 EDT
To: discretemath@mathforum.org
Subject: Induction


Prove that 1*1! + 2*2! + … + n*n! = (n+1)! – 1 whenever n is a positive
integer.

I know I should use induction to prove this... but how?

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