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#1
My math teacher divided by zero a couple weeks ago, showing why we shouldn't divide by zero. This is what he wrote:

a=b, but both are nonzero numbers

a = b
(a^2) = ab
(a^2) - (b^2) = ab - (b^2)
(a+b)(a-b)/(a-b) = b(a-b)/(a-b)
a+b = b
2b/b = b/b
2=1

If a=b, a-b=0.
#3
when
a=b
how can
a+b = b , be?
maybe im just to stupid for math
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#5
Quote by Toast1337
when
a=b
how can
a+b = b , be?
maybe im just to stupid for math


if a is 0 and b is infinity, same thing 0_0
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Captainjack666
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#6
my math teacher did the same thing last year in precal where she posted that 1+1=1 using a similar formula, there is a flaw, i just forget what it is and I don't think that its what Toast1337 pointed out, although it is a good point.
#7
0/0 is infinity

How many times can you take nothing from nothing, or how many times can you take no sweets from no sweets. Infinity
Hull City A.F.C

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#8
I force choke storm troopers who come to me with this crap. They always try to show me how they are smarter than their sith lord.

Seriously, this is the stuff that Jedi sit around and do in their free time. You wanna do math? Get up and get you some Calculus. Math that actually is useful and can be used for spreading evil. That is your first step in harnessing the dark power of numbers. Not this crap.
#9
Quote by zether
(a^2) - (b^2) = ab - (b^2)
(a+b)(a-b)/(a-b) = b(a-b)/(a-b)
explain this move.
Meadows
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I release my inner liberal every morning when I take a shit.
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I wont be like those jerks who dedicate their beliefs to logic and reaosn.
#10
Quote by Vader, Darth
I force choke storm troopers who come to me with this crap. They always try to show me how they are smarter than their sith lord.

Seriously, this is the stuff that Jedi sit around and do in their free time. You wanna do math? Get up and get you some Calculus. Math that actually is useful and can be used for spreading evil. That is your first step in harnessing the dark power of numbers. Not this crap.


You know, the whole Star Wars roleplay thing started to lose ROFL-factor shortly after you began doing it.
The Prime Factorisation of the number of the beast : 2x3x3x37
#11
Quote by Vader, Darth
I force choke storm troopers who come to me with this crap. They always try to show me how they are smarter than their sith lord.

Seriously, this is the stuff that Jedi sit around and do in their free time. You wanna do math? Get up and get you some Calculus. Math that actually is useful and can be used for spreading evil. That is your first step in harnessing the dark power of numbers. Not this crap.


Hull City A.F.C

Quote by Thrashtastic15
crunkym toy diuckl;ess ass ****igkjn ****** **** bitch ass pussy ****er douchecanoe ****** **** you s omn cnt you lieet le biutch
#12
(a^2) - (b^2) = ab - (b^2)
(a+b)(a-b)/(a-b) = b(a-b)/(a-b)

How are you getting between these two stages?
#13
Quote by cam_sampbell
0/0 is infinity

How many times can you take nothing from nothing, or how many times can you take no sweets from no sweets. Infinity


I cbf to go check but I think when you have a 0 in the numerator it goes into the realm of the undefined

if you've only got a 0 in the denominator thats where you get the infinity stuff happening if you put in some limits and such...
#14
^^
lol, beat you.
Meadows
Quote by Jackal58
I release my inner liberal every morning when I take a shit.
Quote by SK8RDUDE411
I wont be like those jerks who dedicate their beliefs to logic and reaosn.
#15
(a+b)(a-b)/(a-b) = b(a-b)/(a-b)

That makes no sense. Go apologise to the universe. Now.
There's only one thing we can do to thwart the plot of these albino shape-shifting lizard BITCHES!
#16
Quote by cam_sampbell
0/0 is infinity

How many times can you take nothing from nothing, or how many times can you take no sweets from no sweets. Infinity

No... you can't take 0 from nothing because there's no value to take and no value to take from.
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#17
Quote by J-B
You know, the whole Star Wars roleplay thing started to lose ROFL-factor shortly after you began doing it.

Leave Vader, Darth alone.

And you can't divide by zero.
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#18
Quote by the evil edge
(a^2) - (b^2) = ab - (b^2)
(a+b)(a-b)/(a-b) = b(a-b)/(a-b)

How are you getting between these two stages?


well, a^2-b^2 does equal (a+b)(a-b), and then ab-b^2 can be factored into b(a-b), then he is just dividing (a-b) to get rid of it on both sides
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He just keeps thrusting


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#19
Quote by the evil edge
(a^2) - (b^2) = ab - (b^2)
(a+b)(a-b)/(a-b) = b(a-b)/(a-b)

How are you getting between these two stages?
It doesn't matter. The first line there says 0=0. Anything after that is meaningless.
#20
Quote by smb
It doesn't matter. The first line there says 0=0. Anything after that is meaningless.


They think they are so cool by manipulating a 0 = 0 equation to say 0 = 0 once again.
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Art & Lutherie
#21
Quote by smb
It doesn't matter. The first line there says 0=0. Anything after that is meaningless.
no, shitty substitutions still mean the work was flawed.
Meadows
Quote by Jackal58
I release my inner liberal every morning when I take a shit.
Quote by SK8RDUDE411
I wont be like those jerks who dedicate their beliefs to logic and reaosn.
#22
Quote by SomeoneYouKnew
no, shitty substitutions still mean the work was flawed.


But subsequent steps after saying 0 = 0 are still meaningless.

Quote by denizenz
I'll logic you right in the thyroid.

Art & Lutherie
#23
Quote by darkstar2466
They think they are so cool by manipulating a 0 = 0 equation to say 0 = 0 once again.
Yeah it's mathematical masturbation.
#24
Math teachers are all bad these days.
Quote by denizenz
I'll logic you right in the thyroid.

Art & Lutherie
#25
a = b?..

can someone please tell me how this oculd possibly make sense?..

a cant equal b, because then it would just be the same value............
#26
Quote by darkstar2466
Math teachers are all bad these days.


I disagree. I know one good one.
There's only one thing we can do to thwart the plot of these albino shape-shifting lizard BITCHES!
#27
Quote by KiLLSWiTCH-KnoT
a = b?..

can someone please tell me how this oculd possibly make sense?..

a cant equal b, because then it would just be the same value............


Yes...

The statement 1 = 1 makes sense, does it not? If a = 1 and b = 1, then a = b -> 1 =1.

Quote by DigUpHerBones
I disagree. I know one good one.


I'm talking about this new generation of math teachers - the ones that graduated within college and started teaching within the last five years. The old ones are mostly good.
Quote by denizenz
I'll logic you right in the thyroid.

Art & Lutherie
#28
Quote by Vader, Darth
I force choke storm troopers who come to me with this crap. They always try to show me how they are smarter than their sith lord.

Seriously, this is the stuff that Jedi sit around and do in their free time. You wanna do math? Get up and get you some Calculus. Math that actually is useful and can be used for spreading evil. That is your first step in harnessing the dark power of numbers. Not this crap.



I support this post
#29
Quote by darkstar2466
Yes...

The statement 1 = 1 makes sense, does it not? If a = 1 and b = 1, then a = b -> 1 =1.


<<


>>


dude i thought you would now by this time that im still high...


<<


>>
#30
Quote by KiLLSWiTCH-KnoT
dude i thought you would now by this time that im still high...


Stop smoking so much weed.
Quote by denizenz
I'll logic you right in the thyroid.

Art & Lutherie
#31
I'm in my math class right now!

HOLY CRAP!
Most of the important things


in the world have been accomplished


by people who have kept on


trying when there seemed to be no hope at all
#33
^

Quote by Nelsean
I'm in my math class right now!

HOLY CRAP!




What kinda math you learnin'?
Quote by denizenz
I'll logic you right in the thyroid.

Art & Lutherie
#34
Quote by zether

a = b
(a+b)(a-b)/(a-b) = b(a-b)/(a-b)


If a=b, how do you multiply by (a-b)? Not just division, but multiplication by zero, so it all goes down the shitter lol.
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Dude, you just made the most intelligent post in this entire thread. Congrats.
#35
Quote by darkstar2466
But subsequent steps after saying 0 = 0 are still meaningless.

tru dat.

but that only holds true for a singular instance where 0 = 0

shitty substitutions wreck havoc universally.
Meadows
Quote by Jackal58
I release my inner liberal every morning when I take a shit.
Quote by SK8RDUDE411
I wont be like those jerks who dedicate their beliefs to logic and reaosn.
#36
Quote by darkstar2466
Math teachers are all bad these days.
I plan to be a maths teacher if ever I finish my degree

mostly because I hate how badly taught maths is
#37
*looks around*

hmmmm.. i seem to have stumbled into a world where the pit does math?

how shall i proceed?....

*finds noose*
#38
Quote by smb
I plan to be a maths teacher if ever I finish my degree


Please be a good one. There needs to be more than one of them in the world.

And this country has to have a proper system of teaching it before year 10.
There's only one thing we can do to thwart the plot of these albino shape-shifting lizard BITCHES!
#40
Yeah that's what's driven me to it - most maths teachers are really really shit. Anyone can learn GCSE maths.
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