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Math's little secrets
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Monkeys
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PostPosted: Mon Jun 15, 2009 5:33 pm    Post subject: Math's little secrets Reply with quote

Let's share all our little tricks we know with Math.
Like, for example: Proving 2 = 1
Funny number calculations
Amasing recurring numbers
etc...

And like anyone with tricks, we won't spill out the secret just like that.
You'll need to figure it out on your own


I'll start off with Proving 2 = 1.
We start of with taking 2 variables, A and B. And A = B, B != 0.


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Portugal
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PostPosted: Mon Jun 15, 2009 5:38 pm    Post subject: Reply with quote

I spill mine, not really a secret just helpful for me, it allows somewhat hard equations to be done in ur head

example: 8 x 16 = ?
8 x 10 u can easily figure is 80 in ur head
8 x 6 is easy 48
than add the 2 numbers to get 128

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^-^
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PostPosted: Mon Jun 15, 2009 7:29 pm    Post subject: Re: Math's little secrets Reply with quote

Insane Monkey Brain wrote:
I'll start off with Proving 2 = 1.
We start of with taking 2 variables, A and B. And A = B, B != 0.



So, are we supposed to disprove the "secrets" if we know how? If so, then you can't divide by (B-A) since A=B, and (A-B)=0.
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cokefag
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PostPosted: Mon Jun 15, 2009 7:36 pm    Post subject: Reply with quote

Mine is to confuse retards.
I ask them
What's the square root of -1?
Being the fucking morons they are, they say, LOLOL NO SQUARE REWT OF -1
AND IM LIEk
FUCK YOU RETARD ITS i.
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Phox
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PostPosted: Mon Jun 15, 2009 7:52 pm    Post subject: Reply with quote

Here's a good one: Zero divide by Zero = any number.

0 divided by 0 equals a number. Since at the moment we don't know what it is, we'll assign it with the letter x. Because 0 divided by 0 equals x, that means that x times zero must equal zero. However, ANYTHING times zero is zero. So 0 divided by zero, is ANYTHING.

Weird, huh?

It's supposedly given mathematitions grief for hundreds of years.


Last edited by Phox on Mon Jun 15, 2009 8:28 pm; edited 1 time in total
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PostPosted: Mon Jun 15, 2009 7:53 pm    Post subject: Reply with quote

cokefag wrote:
Mine is to confuse retards.
I ask them
What's the square root of -1?
Being the fucking morons they are, they say, LOLOL NO SQUARE REWT OF -1
AND IM LIEk
FUCK YOU RETARD ITS i.

Ah, like my math professor used to question, which square root does i represent?
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Phox
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PostPosted: Mon Jun 15, 2009 8:06 pm    Post subject: Reply with quote

Another good math paradox: Any square root problem has 2 perfectly valid answers.

Let's just take the square root of 9 (That number doesn't mean anything, this works with any number)

The problem you have to figure out is what number multiplys by itself to get 9. 3, right? (3 times 3 is 9)

The problem is, if you multiply a negative by a negative, the negatives cancel out and you get the same answer as you would if you took both negative signs out. Negative 3 multiplied by negative three is ALSO 9. This gets confusing, because on math tests in the past, I've been marked off for both giving and not giving the negative alternitive.
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cokefag
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PostPosted: Mon Jun 15, 2009 8:12 pm    Post subject: Reply with quote

Super_Phreak wrote:
Another good math paradox: Any square root problem has 2 perfectly valid answers.

Let's just take the square root of 9 (That number doesn't mean anything, this works with any number)

The problem you have to figure out is what number multiplys by itself to get 9. 3, right? (3 times 3 is 9)

The problem is, if you multiply a negative by a negative, the negatives cancel out and you get the same answer as you would if you took both negative signs out. Negative 3 multiplied by negative three is ALSO 9. This gets confusing, because on math tests in the past, I've been marked off for both giving and not giving the negative alternitive.


I already knew that, which was why newfags can't grasp the fact that the square root of -1 is not fucking -1 or 1.
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Phox
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PostPosted: Mon Jun 15, 2009 8:16 pm    Post subject: Reply with quote

There really is no answer to a square root of a negative number, because in order to achieve a negative result to a multiplacation problem, the signs can't be the same. Correct?
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PostPosted: Mon Jun 15, 2009 8:20 pm    Post subject: Reply with quote

Super_Phreak wrote:
There really is no answer to a square root of a negative number, because in order to achieve a negative result to a multiplacation problem, the signs can't be the same. Correct?

If you only use real numbers then yes, but with imaginary/complex numbers the square root of a negative number can be expressed.
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oib111
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PostPosted: Mon Jun 15, 2009 8:26 pm    Post subject: Reply with quote

^-^ wrote:
Super_Phreak wrote:
There really is no answer to a square root of a negative number, because in order to achieve a negative result to a multiplacation problem, the signs can't be the same. Correct?

If you only use real numbers then yes, but with imaginary/complex numbers the square root of a negative number can be expressed.


Pretty much. The square root of -25 is 5i. i represents the square root of negative one so obviously, 5i*5i = 25i^2 = 25(-1) = -25.

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Phox
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PostPosted: Mon Jun 15, 2009 8:26 pm    Post subject: Reply with quote

^-^ wrote:
Super_Phreak wrote:
There really is no answer to a square root of a negative number, because in order to achieve a negative result to a multiplacation problem, the signs can't be the same. Correct?

If you only use real numbers then yes, but with imaginary/complex numbers the square root of a negative number can be expressed.


That would be under some really crazy caculus stuff though. To the average geeky guy who just finished algebra 2 and is going into 8th grade, there's no answer to the square root of -1. :P
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oib111
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PostPosted: Mon Jun 15, 2009 8:27 pm    Post subject: Reply with quote

Dude, Complex number is in algebra 2 Shocked

^-^ wrote:
Insane Monkey Brain wrote:
I'll start off with Proving 2 = 1.
We start of with taking 2 variables, A and B. And A = B, B != 0.



So, are we supposed to disprove the "secrets" if we know how? If so, then you can't divide by (B-A) since A=B, and (A-B)=0.


Lol, stole what I was going to say. But yes, 2 most definitely doesn't equal one because B-A and A-B = 0. You can't divide by 0...so yeah.

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Phox
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PostPosted: Mon Jun 15, 2009 8:29 pm    Post subject: Reply with quote

I was referring to "imaginary numbers"
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oib111
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PostPosted: Mon Jun 15, 2009 8:30 pm    Post subject: Reply with quote

Complex numbers are imaginary numbers. Once again, Algebra 2.

Wikipedia wrote:

In mathematics, the complex numbers are an extension of the real numbers obtained by adjoining an imaginary unit, denoted i, which satisfies:

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