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#1 2014-05-25 22:09:17

Kumar Gaurav
Member
Registered: 2014-05-25
Posts: 8

New formula for squaring a no.[or may be old].

Hey I was just playing with nos. I found a formula to sq. A no. I.e.
(<n-1>squared)+(2n+1)
'n' here implies the no. You want to sq.

Last edited by Kumar Gaurav (2014-05-25 22:11:33)

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#2 2014-05-25 22:13:32

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,179

Re: New formula for squaring a no.[or may be old].

Hi;

I can not follow that. Please explain a little better.


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 2014-05-25 22:17:07

Kumar Gaurav
Member
Registered: 2014-05-25
Posts: 8

Re: New formula for squaring a no.[or may be old].

This works if you know sq of no. Which lies before it just add 2xno.+1 to sq of no. Lying before the no.

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#4 2014-05-25 22:20:35

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,179

Re: New formula for squaring a no.[or may be old].

You mean like this:

(2 * 6 + 1) + 6^2 = 49 which is 7^2?


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.

Online

#5 2014-05-25 22:24:21

Kumar Gaurav
Member
Registered: 2014-05-25
Posts: 8

Re: New formula for squaring a no.[or may be old].

bobbym wrote:

You mean like this:

(2 * 6 + 1) + 6^2 = 49 which is 7^2?

yes sir!

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#6 2014-05-25 22:26:39

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,179

Re: New formula for squaring a no.[or may be old].

Hi;

This is because of the algebraic identitiy


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.

Online

#7 2014-05-25 22:29:57

Kumar Gaurav
Member
Registered: 2014-05-25
Posts: 8

Re: New formula for squaring a no.[or may be old].

Thanks for informing I will post more.

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#8 2014-05-25 22:33:57

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,179

Re: New formula for squaring a no.[or may be old].

Welcome to the forum.


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.

Online

#9 2014-05-26 00:48:32

Kumar Gaurav
Member
Registered: 2014-05-25
Posts: 8

Re: New formula for squaring a no.[or may be old].

bobbym wrote:

Welcome to the forum.

thanks

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