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+--- Thread: I had a thought... (/showthread.php?tid=8448)
I had a thought... - adrina_kellers - 16-10-2005
(I'm regetting doing this now)
Lock, Please, Quickly, NOW!!!!!
I had a thought... - Talex - 17-10-2005
I'm not shure... Maths baffles me a bit.
...
Looks at title of topic you hade a thought... did it hurt
lol
I had a thought... - Forge - 17-10-2005
whiteninja Wrote:That is just what I was taught. "One is prime, but not odd." I don't get it either, and in fact it seems wrong; maybe my math teacher got it wrong way back when in 5th grade?Hmm. Another thing that I forgot to add is that only an integer can be odd or even. Any fraction or decimal cannot be either odd or even.
I also thought that even numbers were any numbers that ended in 2, 4, 6, 8, or 0 (excluding "0" itself), but from the way you said it, Forge, it sounds like it has to be an even integer. So numbers like 4.8372 would be odd, but I was taught they were even because they ended in an even (in this case "2").
So, now who wants to debate on the (ir)rationality of pi?
Now, pi itself is an odd number - I know it to ten significant figures - 3.141592654. I believe that it was either Pythagoras or Plato who thought that pi was equivalent to 3 1/7, but this produces a number with a large recurrent section.
pi is, for all you who do not know, the direct relationship between the length of the diameter of a circle and its circumference. I think that the major reason why it is such a bizzare number is due to the difference in vectors - the diameter will always be a straight line, whereas the circumference is a vector with a constantly altering velocity. Due to this, it is impossible to have a simple number that defines the relationship. The value of pi is a decimal value that never ends, although we need not use its exact value.
In school, 3.14 is generally the accepted value. In engineering, my dad tells me that 3 1/7 is the accepted value.
Furthermore - don't close this thread. It's providing a decent, intelligent level of conversation - well, for the Void at least.
+1 vote for best thread ever.
I had a thought... - Mirinee - 17-10-2005
adrina_kellers Wrote:(I'm regetting doing this now)XD
Lock, Please, Quickly, NOW!!!!!
...
Yes, odd and even only apply to integers.
The irrational Pi was known way before Pythagoras, who lived a few hundred years BC. The Egyptians and Babylonians (a few thousand years BC) knew of it.
Fascinating, aren't they, circles?
Really? 3 and 1/7 is hardly better than exactly 3.14. I'm studying Engineering, but we're lazy, see, so we always just use the pi button which gives pi to 12 significant figures. More than good enough.
I had a thought... - Forge - 17-10-2005
I am aware that pi was known of before Pythagoras' time, but I could not remember who thought that it was 3 1/7. I can't remember off the top of my head, but I think that 3 1/7 gives you pi to at least seven significant figures... before it starts repeating that is.
Yup, go with the calculator nowadays (although I have a sheet at home which has pi to 2,500 decimal places...).
I had a thought... - Mirinee - 17-10-2005
Forge Wrote:I think that 3 1/7 gives you pi to at least seven significant figures... before it starts repeating that is.*Runs to ask calculator*. Calculator says that 3 1/7 = 3.142857143
*Runs to ask FOmar*. *No reply*. :S
I had a thought... - adrina_kellers - 17-10-2005
LOCK. Or I WILL KILL MYSELF!!!
I had a thought... - whiteninja - 18-10-2005
Why? This is actually a good thread. *feels like dork for saying that*
pi = 3.1415926535897932384626433 (by my memory), I did I science fair project where I made my own formula for it and calculated it to 1084 decimals. It got me 1st place for 7th and 8th grade in the regional fair.
[/brag]
I was always taught that any rational number could be odd or even... not just integers... my math teachers all sucked!
I had a thought... - Judgment - 18-10-2005
adrina_kellers Wrote:LOCK. Or I WILL KILL MYSELF!!!*Chains you to a chair* now you cant kill yourself and the topic can continue. PROBLEM SOLVED. BEST MAN AWAY *flys away in reverse*
I had a thought... - Shade - 18-10-2005
heres a new one
why is for example 40 = 1
(i mean four to the power of zero)