Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**Ricky****Moderator**- Registered: 2005-12-04
- Posts: 3,791

I found this a few days ago, it uses very clear and simple terminology, as well as some really good examples.

"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."

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**Prakash Panneer****Member**- Registered: 2006-06-01
- Posts: 110

Wonderful site.

Letter, number, arts and science

of living kinds, both are the eyes.

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,619

He sure is good at explaining it. I have it open, and read bits of it when I can.

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

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**Devantè****Real Member**- Registered: 2006-07-14
- Posts: 6,400

Nice find, I'm sure a lot of people will use it. And yes, very good explaining...

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**George,Y****Member**- Registered: 2006-03-12
- Posts: 1,306

It's nice to have so many free books today. Thank you Ricky.

**X'(y-Xβ)=0**

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