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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
From: Bumpkinland
Registered: 2009-04-12
Posts: 89,124

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

Hi;

In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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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
From: Bumpkinland
Registered: 2009-04-12
Posts: 89,124

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.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#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
From: Bumpkinland
Registered: 2009-04-12
Posts: 89,124

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.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#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
From: Bumpkinland
Registered: 2009-04-12
Posts: 89,124

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.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#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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