/jp/ - Otaku Culture

-9

epic win op

-9

This was just posted on /v/.

inb4 some troll doesn't answer -9

17

17.

>>6178583
>he goes to other boards!

17.

-9

how are you people getting 17? i can't figure out your fucked up order of operations, regardless if you're trolling or not.

5-6*6/2+4
= 5-36/2+4
= 5-18+4
= -13+4
= -9

>>6178603
I never learned math properly and failed all my classes. True story.

>>6178608
Why can't you please excuse my dear aunt sally?

>>6178613
Learning with little gaylets like that is for autists.

5-6*6/2+4

Looking at the PEMDAS rule:
5-(36)/2+4
5-18+4
5-22
-17

AKA you are all idiots

>>6178620
Not only do you not know the standard order of operations, but you think "AKA" means something which it does not. Please return to school.

gg baby

>>6178620
found a pic of this poster

>>6178620

Order of operations, bitch.

Addition and Subtraction are on the same level, so operate left to right when you're at that stage. 5-18 takes priority over 18+4.

BACK TO FIFTH GRADE WITH YOU

>5-18+4
>5-22

woman detected

>>6178625
>>6178632
I TROLLED YOU GUYS HARD

>>6178618
You mean mnemonics?
Much smarter people than you use them every day, to do very important things.

>>6178613
God, I should have learned this years ago. This does me no good now.

The answer is 17.

Trust me i am math and outer space.

Majority of the thread is one person.

>>6178639
Did you know Easter bunnies get drunk at Easter?

Kennedy died of starvation, suckah!

>>6178644
It's never too late to learn.

0.99999... = 1
x = 0.99999...
10x = 0.99999... × 10 = 9.99999...
100x = 0.99999... × 100 = 99.99999...
100x -10x = 90x
100x - 10x = 99.99999... - 9.99999... = 90
90x = 90
x = 1
0.99999... = 1

>>6178639
They are gaylets and they are for autists. By "much smarter" I assume you just mean "more learned"; nobody is smarter than me.

>>6178661
1/3 = 0.33..
2/3 = 0.66..
3/3 = 0.99..

People on the spectrum enjoy making up words like "gaylets," "autists," "noviophobia," and "gaybian."

>>6178662
Well crap...you just might be a genius.

>>6178665
3 ÷ 3 = 1

>>6178670
On the spectrum of what?

>>6178661

I find it funny that people are supposed to take ".9 repeating = 1" as it's some sort of miracle of mathematics.

It's... uh... Duh? Basic understanding, here.

>>6178665
This is so dumb... /jp/ really is full of children.

>>6178681
It's not 1, just like .8888 repeating is not .9. Get a brain, moran.

>>6178681
It's not that it's a miracle of mathematics. It's that so many people on so many levels stubbornly reject the reasoning that it has to be elaborated to the point that it seems like one is trying to present it as one.

>>6178679
Autism

>>6178681
Its not 1, its infinitely close to 1. People who disagree only prove how simple and stupid mankind is.

>>6178685
x = 0,88888...
10x = 10 × 0,88888...
10x - x = 9x
10x - x = 8,88888... - 0,88888... = 8
9x = 8
x = 8/9

All up in this thread.

OP is just mad that it got solved like 2 minutes after posting and clinging onto whatever pittance we give him.

>>6178685
Nobody's saying that 8/9 = .9.
We're saying that 9/9 = 1.
lrn2readingcomprehension

>>6178620
The order of operations has nothing to do with it here
5-6*6/2+4=5-18+4
obviously but you don't get different results if you add different sides of the equation
(5-18)+4 != 5-(18+4)
obvious... but the only reason you would make this mistake was if you were retarded. That is wrong... the correct way is
(5-18)+4 = 5+(-18+4) as you're adding negative 18 to positive 4 or
5-18+4 = -9
5+4 = -9+18
5+4 = 18-9
and not
5-18+4 = -17
cause that's
5+4 = -17+18
just
5+4 = 18-17
dumbfuck retarded
5+4 = 1
The fact that ANYONE would need this be explained to them makes this a very sad day for the species. Now excuse me, I'm getting me a banana coz I'm hungary

>>6178690
People "on the spectrum" have difficulty with words in the first place, they're not really up for inventing them.

>>6178692

Infinitely close is good enough, Xeno.

>>6178700

>Zeno*

(actually Ζήνων but who cares)

>>6178692
This. Why is humanity so stupid?

-9

>>6178698
I love how there's always some math nerd who goes out of his way to explain the formula in precise detail, when nobody really cares.

>>6178692
>>6178685
see >>6178661

1/3 = 0,33333...
1/3 + 1/3 + 1/3 = 3/3
0,33333... + 0,33333... + 0,33333... = 1
3/3 = 3 ÷ 3 = 1

>>6178708
There are so many practical applications in the world where "infinitely close to 1" can be and is taken to be 1. Maybe you should look into applied math beyond a high school level and quit being so stupid yourself.

>>6178577
/jp/ cannot smart
try /sci/

Cirno made the formula, so the answer is actually --8.

/jp/ confirmed for exponentially smarter than /v/.

Not like that says anything.

>>6178717

Technically, if you want to do that, "1/3 = .33333..." is incorrect.

We can't represent 1/3 in decimal value. .333... is just a handle on something that can't accurately be portrayed like that.

But this is so incredibly minor that I'm not going to push the point.

>>6178719
>I do not understand how infinity works

>>6178728

>Neither do I

If "infinitely close" did not round into a full value, Zeno's first paradox should freeze the entire universe and motion should be impossible.

>>6178726
That's why it's wrong. See, it's like this:

1/3 = .3333.... (dots represent infinity)
2/3 = .6666....
3/3 = 1

Why?
.3333+.6666=.9999
....+....=the rest that adds up to 1

Why can't people understand this?

>>6178724

Well, I'd expect even a Tea Party convention to be smarter than /v/. Well maybe not, if anything they'd be competing against each other to see who can add up 2+2 first.

Oh, I thought 6*6 was 42 for some reason.
Now I get it

Took me ten seconds to get the answer (-9). I haven't done an equation since I dropped out of high school five years ago.

>>6178731
Infinity + Infinity is a little bit farther from 1 than one might expect.

>>6178738
It's not infinity.

It's 1/3 of infinitely small added with 2/3 of infinitely small.

>>6178733

>>6178743
Oh no, I'm certain you said that "...." represents infinity.

-10. No, seriously.

I have no idea of why people have such difficulties with the concept of repeating decimals. If you can accept that 1/3 is another writing for .33..., why can't you also accept that .999... is another writing for 1?

>>6178757
What, how?

>>6178577
x=5-6x6/2+4
2x=10-6x6+4
2x=10+4-36
2x=-18
x=-9

>>6178753
Bah, fine. Since infinity is always the same anyway, it doesn't really change anything. Whether it is infinitely small of infinitely large.

>>6178763
>base ⑨ fuck yeah.jpg

5-6=-1
-1x6=-6
-6/2=-12
-12+4=-8

That's the answer. You forgot to use Cirno logic.

If 0.99999... =! 1 then that would mean 1/3 + 1/3 + 1/3 =! 1 while 3/3 = 1.
ITT: People who can't into real numbers.

>>6178764
shit nigger, wtf are you doing

>>6178765
I am sorry, but you do not know what you're talking about.

5 - 6 x 6 / 2 + 4
5 - 36 / 2 + 4
5 - 18 + 4
-13 + 4
-9

>>6178776

I'd into your real numbers, Eiki.

y(x) = 5 - ( 6 x 6 ) / 2 +4
y(x) = -9

ITT: Bakas.

>>6178762

People who refute 0.999...=1 simply don't truly understand what "infinite" means.

If something is "infinitely close" to another thing, it is that thing. "Tending" to something as it approaches infinity is a different thing entirely.

>>6178776
1/3 is a representation of .333 repeating. Which is a limit representing 1/3 of 1. Its not an actual number.

>>6178792
>If something is "infinitely close" to another thing, it is that thing.
You couldn't be more wrong.

>>6178772
>-6/2=-12
If you're going to ignore the order of operations just for fun, at least consistent and correct in the context of your own logic.

>>6178793
>Its not an actual number.

The definition of a rational number is a value which can be represented by p / q, where p and q are integers.

>>6178799
It's Cirno logic, it's not supposed to make sense, stupid.

>>6178797
He's right, unless you can tell us all what's the exact amount of infinitely small. But then don't blame us if the universe ceases to exist.

>>6178803
And you can't just switch from that representation to the other to prove your "point".

>>6178793
>actual numbers

I'm not aware of an algebraic structure of this name.

>>6178797

Infinitely small has to collapse into 0 or else you cannot move because you have to cross an infinite amount of infinitely small divisions. If infinitely small does not collapse into 0, then they stack infinitely and all things are infinite distance apart.

>>6178807
I wasn't using a mathematical term. What I'm saying is that yes .9 repeating is another way of writing 1, but its not some profound discovery of two numbers being equal. .9 repeating is not a separate number from 1, its a limit that represents it.

>>6178805
Would you think that 1/infinity is 0? Yeah, I think you would. And you would be wrong.
The LIMIT as x approaches infinity of 1/x is 0. But 1/infinity is not 0. Tell me, do you know what an asymptote is?

>>6178805
>amount
>infinity

BEDMAS
5-6x6/2+4
5-6x3+4
5-18+4
5-22
-17

>>6178809
>didn't study some basic maths
That's not basic and anyone claiming it is obviously thinks he's really smart. Funny, considering he's wrong.

>:D

Fuck, I feel like I'm back to high school, a pity I've forgot most of this stuff.

>>6178815

Well if you're saying there's something inbetween 0,999... and 1 then please tell me what's inbetween.

>>6178806
Yes, you can. The mapping between the two is well defined.

>>6178819
Go to wolframalpha.com and enter it in.

It's -9.

Your call.

>>6178819
It's actually
B(Or P)
E
MD
AS

Multiplication and division are on the same tier, so you just do those left to right. Otherwise it's fine.

If infinitely x = x then 1/0 equals infinitely small.

>>6178830
I mean, x/0.

>>6178826
I'm not saying that. I'm saying that the reason .999... = 1 is NOT because its infinitely close to 1.

>>6178813
The tangent to a curve at infinity. Does this have some kind of point you were leading up to? The problems with 1/infinity are wholly different, such as reversability; the answer to the problem depends on what
construct we are working in.

>>6178830
No, that's undefined.
And the limit as x approaches 0 of 1/x is infinity.
Oh, hey, you must be a retard!

This is a horrible thread and I hate every single one of you.

>>6178842
Many mathematicians don't agree with x/0=undefined. I am just one of them.

These threads make me feel like a genius. It's like I'm really Cirno!

>>6178843
Then try to quantify your hate as a function in a graph

>>6178842
1/1=1
1/.5=2
1/.00000....=infinitely large

But by that same logic:
1/1=1
1/2=.5
1/infinity=0

UNLIMITED ⑨ = CIRNO IS #1, THERE IS NO MORE DISCUSSION

I will just leave this here:
http://en.wikipedia.org/wiki/0.999......

>In mathematics, the repeating decimal 0.999... which may also be written as 0.9, 0.9̇ or 0.(9), denotes a real number that can be shown to be the number one. In other words, the symbols 0.999... and 1 represent the same number. Proofs of this equality have been formulated with varying degrees of mathematical rigour, taking into account preferred development of the real numbers, background assumptions, historical context, and target audience.

>>6178845
>calling yourself a mathematician
Well, Mr. Bright Spark Mathematician, I'm sure we can at least agree that ANYTHING besides 0 divided by 0 will actually be an amazingly large number, and not the infinitely small that you previously claimed it to be.

>>6178851
a/b=c
1/2=.5
b x c=a
2 x .5=1

1/infinity=0
infinity x 0=1

>>-9

Wait, what? I got -37.

>>6178851
By the way, I got to the last one because of your "if something approaches it, then it is that value!" logic.

>>6178858

Why does infinityx0 equal 1? Why not 7, or 1/2, or 7885.332...?

>>6178855
I dun goofed there, i's sowwies

The answer is: witches exist and Beatrice did it

>>6178861

5-6*6/2+4
5-6*3+4
5-18+4
5-14
-9

Some maths we can all agree on.

>>6178867
Because 1/infinity equals 0. The proof is in the post and >>6178851

>>6178862
>if something approaches it, then it is that value!
Dude, please try keep your inner retard in, the stench is atrocious.

What I said was that the limit would be that value. Do you know what limits are?

>>6178874
Any number divided by infinity equals zero, therefore, infinity times 0 is any number.

>>6178874

But the same proof applies to any other number.

>>6178878
No, because x times 0 is 0. So even if x is infinity it should be 0.

>>6178878
I'm pretty sure infinity times 0 is an indeterminate form.

>>6178878

>>6178887
Once again, I'm pretty sure 0 times infinity is an indeterminate form.

infinity - infinity = 0

Math can't handle infinity.

Except that this picture is infinitely hot.

>>6178889
I'm pretty sure I'm just fucking with his stupid logic.

>>6178895
infinity + 1 = infinity

>>6178895
Not true. That's only true if both infinities are at the same speed. If one is faster than the other, the answer could be infinity or -infinity.

Infinity doesn't exist. You can't apply it to mathematical concepts.

>>6178895

infinity - infinity = 0
infinity * 0 = 0
infinity * 0 = infinity - infinity
infinity+infinity*0= infinity
2*infinity = infinity/0
0 = infinity/0-2*infinity
0*0 = infinity-2*infinity
0=infinity

>>6178904
But we can at least approach it.

>>6178911
>divide by zero
>fail math forever

>>6178904

How's that complex numbers course going?

>>6178855

Anything divided by 0 is undefined. That's by definition.
You can't rightly call yourself any kind of mathematician.

Also, this thread is still going? Fuck.

>>6178904

Infinity exists as a concept. It is not, however, a number. It can be used much like a variable, though. There are also different degrees of infinity.

>>6178922
Please tell that to the person I was quoting. I was just going along with him.

>>6178936

Well, he thought that 1/x as x approaches 0 approaches infinitely small, which just shows that he can't think. You corrected that, but if he's going to disagree with x/0 being undefined, then he'd have to show an actual argument instead of just an assertion, and I'd expect any mathematician to do just that, instead of just calling himself a mathematician who disagrees with it.

Point is, this thread shouldn't be going on like this.

Solve your homework yourself, baka