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

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bobbym
2013-08-10 02:11:53

Hi;

Those cyber bites can hurt.

I did not want to confuse you with lots of jargon when it could be explained simply at the price of a little rigor.

Al-Allo
2013-08-10 02:04:56

It's ok, I won't bite you. I'll just return to it when I know more about those things.

bobbym
2013-08-10 02:02:56

This is more usually discussed in Numerical analysis and is not covered in the standard curriculum. Please understand to actually describe what that symbol means I would have to go into absolute error, relative error and actual error. Since it is not necessary for this discussion I stated it not very rigorously.

Al-Allo
2013-08-10 02:00:07

Ahh, never seen this topic ... Anyway, Ill return to it another time. By the way, could you go see my topic in exercices please ??? thanks

bobbym
2013-08-10 01:57:46

It describes a limiting factor for instance

Stirlings approximation:

or

This means that as n approaches infinity the approximation on the right ( Stirling's ) gets better and better. ( loosely stated )

Al-Allo
2013-08-10 01:52:32

Thank you, even if I have no idea what It means xD But thanks again

bobbym
2013-08-10 01:43:16

Hi;

That means asymptotically equal to. Sometimes I see ~ meaning the same thing.

≈ means approximately.

http://en.wikipedia.org/wiki/%E2%89%88

Even better:

http://en.wikipedia.org/wiki/Unicode_ma … _operators

Al-Allo
2013-08-10 01:36:27

Can somebody tell me what is the meaning of this symbol :

Is it approximation ?