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Re: fibonacci question

• To: mathgroup at smc.vnet.net
• Subject: [mg119479] Re: fibonacci question
• From: Robert Rosenbaum <robertr at math.uh.edu>
• Date: Sun, 5 Jun 2011 07:05:23 -0400 (EDT)

Curiously, the following expression evaluates to True:
FullSimplify[Fibonacci[cn] + Fibonacci[cn + 1] == Fibonacci[cn + 2]]

Best,
Robert


On Jun 4, 2011, at 5:19 AM, olfa wrote:

> Hello Mathematica community,
> 
> why FullSimplify[Fibonacci[cn] + Fibonacci[cn + 1]] is not simplified
> into Fibonacci[cn+2]?
> what mathematica function should I use to get this output?
> 
> thank you very much for your help.
>