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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.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#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 
"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.'