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#1 2013-02-05 14:13:41

ReallyConfused
Guest

Fibonacci series

Is there any formulae for finding nth fibonacci series?

#2 2013-02-05 14:55:15

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,636

Re: Fibonacci series

Hi;

Welcome to the forum. There simplest is called the Binet formula.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#3 2013-02-05 17:28:11

ReallyConfused
Guest

Re: Fibonacci series

Thank you but that formulae is for nth fibonacci number,i want a formula for the sum of fibonacci numbers from 1st to nth fibonacci number(nth series)

#4 2013-02-05 18:36:12

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,636

Re: Fibonacci series

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#5 2013-02-05 18:55:36

ReallyConfused
Guest

Re: Fibonacci series

Wow,that works perfectly ,why does it work?

#6 2013-02-05 19:33:55

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,636

Re: Fibonacci series

Hi;

http://en.wikipedia.org/wiki/Fibonacci_number

About 1 / 3 down the page there is an explanation for how to do the sum by grouping.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Offline

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