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Author Topic: Something you know  (Read 19846 times)

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Offline ruler501

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Re: Something you know
« Reply #30 on: February 24, 2011, 06:12:25 pm »
It does sometimes...
Other times it doesn't... other times=99.999999...% of the time(now lets see what does that equal)

EDIT: and I don't get the proof. why does it not equal infinity?
« Last Edit: February 24, 2011, 06:13:23 pm by ruler501 »
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Offline Juju

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Re: Something you know
« Reply #31 on: February 24, 2011, 06:13:03 pm »
Quote from: ruler501 on February 24, 2011, 06:12:25 pm
It does sometimes...
Other times it doesn't... other times=99.999999...% of the time(now lets see what does that equal)
It equals 100%.
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Offline Deep Toaster

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Re: Something you know
« Reply #32 on: February 24, 2011, 06:13:26 pm »
Quote from: ruler501 on February 24, 2011, 06:12:25 pm
99.999999...%

My calculator gives me a syntax error there.
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Offline ruler501

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Re: Something you know
« Reply #33 on: February 24, 2011, 06:14:32 pm »
I wonder why it is the same as 0.999999999...=1 simple infinite series that don't switch signs and get less than the original when all operations are additiion
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Offline phenomist

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Re: Something you know
« Reply #34 on: February 24, 2011, 06:52:08 pm »
Quote from: juju2143 on February 24, 2011, 06:12:02 pm
O_o how the hell adding an infinite number of positive numbers equals a negative one?

Math sure is weird.

Let's see if this rings a bell to programmers: It's a bit like signed numbers. 65535 = -1. 65535 = 1111111111111111 in binary. (in Axe. Sort of.)
Only in math, it's a perfect computer that has an infinite number of bits. But if you turn all of the bits on, then it becomes negative :D. 1+2+4+8+16+... = -1.

Well, maybe not, but that's the way I think of it. Still taking calculus, so I don't know the intricacies of this.

Also, strange followup: You've heard that you can't go colder below absolute zero, but it turns out that negative temperature is WARMER than an infinite amount of degrees. http://en.wikipedia.org/wiki/Negative_temperature
« Last Edit: February 24, 2011, 08:30:10 pm by squidgetx »
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Offline ruler501

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Re: Something you know
« Reply #35 on: February 24, 2011, 06:55:42 pm »
the wikipedia link is broken

and I kind of understand how you could prove that
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Offline jnesselr

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Re: Something you know
« Reply #36 on: February 24, 2011, 07:19:21 pm »
If I had mod powers, I could fix it.  Just do:
Code: [Select]
[url=http://en.wikipedia.org/wiki/Negative_temperature]wiki[/url]
to get this: wiki
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Offline Xeda112358

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Re: Something you know
« Reply #37 on: February 24, 2011, 11:44:38 pm »
For raising to the imaginary power, you must work with positive real numbers (numbers that work with the natural log). If you want to use negatives to an imaginary power, you have to some even more advanced math playing :D so pretty much:
xi=cos(ln(x))+i*sin(ln(x))
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Offline willrandship

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Re: Something you know
« Reply #38 on: February 25, 2011, 12:40:46 am »
1+1+1+1+1+1+1+1+1+1+1+1...... as a signed int, when it reaches 32767 (or something) DOES become negative :P
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Offline ralphdspam

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Re: Something you know
« Reply #39 on: February 25, 2011, 01:27:43 am »
Yeah, but they were talking about real-life math, not 16-bit signed integers.  I still don't get it. How can 1+1+...=-1?
I will try it once i am finished dividing by 0.
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Offline Xeda112358

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Re: Something you know
« Reply #40 on: February 25, 2011, 01:28:35 am »
because it is infinite bit :D
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Offline ralphdspam

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Re: Something you know
« Reply #41 on: February 25, 2011, 01:31:52 am »
Ok. That kind of makes sense in a sort of roundabout fashion. 
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Offline Xeda112358

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Re: Something you know
« Reply #42 on: February 25, 2011, 01:34:56 am »
Yep, it is one of those things where it kind of almost nearly comes close to possibly being probably understandable in a drawn out roundabout way, just like you said :D Really, you could prove it to be anything which is why infinity is regarded more as a concept as opposed to a number.
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