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#1 2009-11-03 11:24:24

MathsIsFun
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Squares and Square Roots

I decided to go from one to two pages on Squares and Square Roots:

The Original (simple): Squares and Square Roots

The New One (more advanced): Squares and Square Roots in Algebra

Does it cover it well?


"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman
 

#2 2009-11-04 00:53:29

bobbym
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Re: Squares and Square Roots

MathsisFun;

MathsisFun wrote:

Does it cover it well?

Yes.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#3 2009-11-04 01:37:32

mathsyperson
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Re: Squares and Square Roots

Good pages!
The one change I'd make is to add a bit more explanation to when you say √2 * √2 = 2.


Why did the vector cross the road?
It wanted to be normal.
 

#4 2009-11-04 07:16:00

MathsIsFun
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Re: Squares and Square Roots

Thanks, will do smile


"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman
 

#5 2009-11-07 18:22:15

Anakin
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Re: Squares and Square Roots

mathsyperson wrote:

Good pages!
The one change I'd make is to add a bit more explanation to when you say √2 * √2 = 2.

√2 * √2 = √(2*2) = √4 = 2

About that.. ^, if you really want to, you can also state that the √a * √b = √ab is not always true.

For instance, - 1 = i^2 = i * i = √-1 * √-1 = √(-1*-1) = √1 = 1

That is untrue, so if you are really bored enough, you can add that and explain why.'

smile

 

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