James_Probert
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Joined: Nov 25, 2007
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  Posted:
Oct 04, 2011 - 23:06 |
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DukeTyrion wrote: | Sutherlands wrote: | DukeTyrion wrote: | Sutherlands wrote: | DukeTyrion wrote: | The problem is, the decimal system can never quite be exact. | Give me a fraction that can't be represented as a decimal, please.
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Pi | Seriously? You think Pi is a fraction? |
It might be an irrational number, but it's a hell of a lot easier to just represent it at 355/113 ![Wink](./modules/PNphpBB2/images/smiles/icon_wink.gif) |
which is wrong by the 8th significant figure...
not useful. |
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DukeTyrion
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Joined: Feb 18, 2004
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  Posted:
Oct 04, 2011 - 23:09 |
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James_Probert wrote: | DukeTyrion wrote: | Sutherlands wrote: | DukeTyrion wrote: | Sutherlands wrote: | DukeTyrion wrote: | The problem is, the decimal system can never quite be exact. | Give me a fraction that can't be represented as a decimal, please.
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Pi | Seriously? You think Pi is a fraction? |
It might be an irrational number, but it's a hell of a lot easier to just represent it at 355/113 ![Wink](./modules/PNphpBB2/images/smiles/icon_wink.gif) |
which is wrong by the 8th significant figure...
not useful. |
And how many digits do you remember Pi to when you do your calculations? |
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Grod
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Joined: Sep 30, 2003
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  Posted:
Oct 04, 2011 - 23:09 |
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Well if you talk about winning the lottery, then we are talking similar chances for each player (very close to 0). However, often SOMEONE wins, so the chance was not exactly 0 for that 1 winner...
(this is a response to the OP) |
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Last edited by Grod on %b %04, %2011 - %23:%Oct; edited 1 time in total |
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Sutherlands
Joined: Aug 01, 2009
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  Posted:
Oct 04, 2011 - 23:13 |
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DukeTyrion wrote: | James_Probert wrote: | DukeTyrion wrote: | Sutherlands wrote: | DukeTyrion wrote: | Sutherlands wrote: | DukeTyrion wrote: | The problem is, the decimal system can never quite be exact. | Give me a fraction that can't be represented as a decimal, please.
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Pi | Seriously? You think Pi is a fraction? |
It might be an irrational number, but it's a hell of a lot easier to just represent it at 355/113 ![Wink](./modules/PNphpBB2/images/smiles/icon_wink.gif) |
which is wrong by the 8th significant figure...
not useful. |
And how many digits do you remember Pi to when you do your calculations? | 3.1415926535 is the part i remember. Of course most calculators and software have a value that you can use. |
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James_Probert
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Joined: Nov 25, 2007
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  Posted:
Oct 04, 2011 - 23:13 |
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DukeTyrion wrote: | James_Probert wrote: | DukeTyrion wrote: | Sutherlands wrote: | DukeTyrion wrote: | Sutherlands wrote: | DukeTyrion wrote: | The problem is, the decimal system can never quite be exact. | Give me a fraction that can't be represented as a decimal, please.
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Pi | Seriously? You think Pi is a fraction? |
It might be an irrational number, but it's a hell of a lot easier to just represent it at 355/113 ![Wink](./modules/PNphpBB2/images/smiles/icon_wink.gif) |
which is wrong by the 8th significant figure...
not useful. |
And how many digits do you remember Pi to when you do your calculations? |
Depends.
If I have other limitations with regards to accuracy, then 4/5 is good enough, which I can just do off the top of my head.
If other things are more exact, I might write/use a program to get it to 10+ figures. |
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DukeTyrion
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Joined: Feb 18, 2004
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  Posted:
Oct 04, 2011 - 23:14 |
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James_Probert wrote: |
Depends.
If I have other limitations with regards to accuracy, then 4/5 is good enough. |
In which case 355/113 would work perfectly well too ![Very Happy](./modules/PNphpBB2/images/smiles/icon_biggrin.gif) |
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Grim04
Joined: Oct 30, 2005
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  Posted:
Oct 04, 2011 - 23:18 |
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Sutherlands wrote: | DukeTyrion wrote: | The problem is, the decimal system can never quite be exact. | Give me a fraction that can't be represented as a decimal, please. |
1/0 |
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shadow46x2
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Joined: Nov 22, 2003
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  Posted:
Oct 04, 2011 - 23:21 |
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Grim04 wrote: | Sutherlands wrote: | DukeTyrion wrote: | The problem is, the decimal system can never quite be exact. | Give me a fraction that can't be represented as a decimal, please. |
1/0 |
you, sir...win one internets
--j |
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sann0638
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Joined: Aug 09, 2010
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  Posted:
Oct 04, 2011 - 23:29 |
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[quote="James_Probert"]which is wrong by the 8th significant figure...
not useful.[/quote
I think I read that 8 sig figs is accurate enough to give the circumference of the earth (assuming the earth is a spher) correct to a cm, or something like that. So pretty useful.
And back to the logs chap (struggling to quote more than once), how would you put 0.9 recurring into your calculator? |
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Sutherlands
Joined: Aug 01, 2009
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  Posted:
Oct 04, 2011 - 23:41 |
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Grim04 wrote: | Sutherlands wrote: | DukeTyrion wrote: | The problem is, the decimal system can never quite be exact. | Give me a fraction that can't be represented as a decimal, please. |
1/0 | Not a number, but well played.
sann0638 wrote: | And back to the logs chap (struggling to quote more than once), how would you put 0.9 recurring into your calculator? | 1 |
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James_Probert
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Joined: Nov 25, 2007
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  Posted:
Oct 04, 2011 - 23:46 |
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As an addendum to the OP:
Can anyone think of a situation where it is more efficient/better to use 0.9 recurring, instead of 1? |
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Fela
Joined: Dec 27, 2004
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  Posted:
Oct 04, 2011 - 23:56 |
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James_Probert wrote: | As an addendum to the OP:
Can anyone think of a situation where it is more efficient/better to use 0.9 recurring, instead of 1? |
When explaining recurring numbers? ![Smile](./modules/PNphpBB2/images/smiles/icon_smile.gif) |
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BooAhl
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Joined: Sep 02, 2004
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  Posted:
Oct 05, 2011 - 00:00 |
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Sutherlands wrote: | DukeTyrion wrote: | The problem is, the decimal system can never quite be exact. | Give me a fraction that can't be represented as a decimal, please. | ]
How about Pie? Is that a fraction?
Now laugh funny guys! |
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Alf115
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Joined: Aug 17, 2005
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  Posted:
Oct 05, 2011 - 00:11 |
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Brother-Fu
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Joined: Dec 22, 2006
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  Posted:
Oct 05, 2011 - 00:14 |
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Damn Paul, you really know how to give the nerds a hard-on... |
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