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Archived threads in /sci/ - Science & Math - 144. page
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How autistic are you /sci/ ?

https://psychology-tools.com/autism-spectrum-quotient
83 replies and 31 images submitted. Click here to view.
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>50 questions
dropped
>>
>>8350594
>this is why i suck with social interactions!
>>
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>>8350594
there's no way someone could legitimately get 50 on this

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Post your best riddles.

To start: have 12 identical-looking balls. One of these balls has a different weight from all the others. You also have a two-pan balance for comparing weights. Using the balance in the smallest number of times possible, determine which ball has the unique weight, and also determine whether it is heavier or lighter than the others.
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>>8351132
7
>>
>>8351378
I think you can do it in 5?

6v6, select heaviest group
3v3, if both are the same weight do 3v3 the lighter group
Now do 1v1 with each of the 3 in the anomalous group against a known correct weight ball from the other 6.

Worst case: ball is lighter, ball is last or second last tested: 6v6, 3v3, 3v3, 1v1, 1v1

That's the best I could come up with.
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>>8351382
That's ideal; there are 2*12=24 possible scenarios, which is more than the 2^4=16 outcomes which could be determined in 4 weighings.

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Hi guys,

What is the best major man can do?
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True answer: Where your passion lies
>>
>>8343406
This guy gets it. Unless your passion is philosophy because holy shit, what a terrible major.
>>
african american studies

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are there some scientific reasons against eugenics by genetical engineering ?

for example if we would find the genetical "g" the general intelligence factor

is there any reason besides moralistic chatter that would speak against an exclusive selection of the most intelligent embryos ?

ive heard arguments like the alleged reduction of genetic diversity that might lead to a lesser adaptation speed

but isnt that wrong ? how would you decrease the diversity if you were to shift the bell curve in one direction ? the distance between the dumbest...
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Hidden practice in certain circles.
Class based, commoners are not in the club.
>>
Barring ethical and engineering issues ("Making your kids awesome is and because muh feels" or "We don't have the technology, methods, or understanding of genetics to do this as X level"), there's nothing wrong with it.

One could argue the fears of "adapting too slowly" are misplaced as we as humans could adapt as needed without having to "wait" for it to happen.

Of course the sheer scale and number of factors involved are daunting so I'd say we should solely dip our toes in, not dive in head first. Getting...
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>>8354186
>are there some scientific reasons against eugenics by genetical engineering ?
Not really.

>is there any reason besides moralistic chatter that would speak against an exclusive selection of the most intelligent embryos?
Yes.

>ive heard arguments like the alleged reduction of genetic diversity that might lead to a lesser adaptation speed, but isnt that wrong ? how would you decrease the diversity if you were to shift...
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Some people are saying we'll never realize fusion power, flying cars, faster than light travel and holographic displays in our lifetimes unless there is a World War 3
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>>8348019

It's not, but since most of our psychology is inherited from the time when Humans were apes in trees, we tend to respond more effectively against obviously dangerous, fast acting threats.
>>
Challenge is necessary. But it's not necessarily war. People don't move their asses unless they depend on it, or if there's a demand and they profit from it.

There simply isn't a demand for flying cars, fusion, holographics devices and such.
>>
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>>8348019
No. Tho science and technology does advance warfare.

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Well /sci/?
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>>8351695
1/11
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>>8351695
We can solve this problem by writing out every single outcome of two dice rolls, but we can simplify the sample space because it's given that at least one dice is a 6. Therefore our remaining options are:
1,6
2,6
3,6
4,6
5,6
6,1
6,2
6,3
6,4
6,5
6,6
out of these 11 total possible outcomes, only 1 outcome has 2 sixes. Therefore the probability is 1/11.
>>
1 in 6

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Supposing climate change is all true

>it is happening
>we are responsible for it / accelerating it etc.

My understanding goes as far that global temperatures are rising, ice caps melting, sea levels rising and polar bears dying.

But in your opinion what are the consequences for the average joe? Best and worst case. I read some disasters e.g. hurricanes, floods might become more frequent, but how so? Where I live I have never experienced a hurricane.

Also, there should be 2 sides of the...
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>>8346893
higher temperature=more convection=bigger storms
biggers storms+higher sea level=more flooding

As for the benefits. It may not be bad if we had the infrastructure to deal with the consequences. Burning fossil fuels is one of the best ways to deal with challenges the climate presents us with.
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>>8346906
>more convection

could this mean more wind power to harness?
>>
>>8346893
>where I live I have never experienced a hurricane
And where is that? The middle of bumfuck nowhere?

>develops a poisonous skin so animals leave it alone
>also develops a colorful pattern so animals are attracted to it

what a fucking retard
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dont animals see his colors and somehow know he is poisonous so they don't fuck with him?
Poisonous skin wouldn't protect the frog unless other animals knew he was poisonous.
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>>8352043
>>8352045
He was poisonous from the beginning. There is no evolution or development.
>>
>>8352043
There is no advantage in killing the thing that eats you if it still eats you

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Really. Do engineers do anything that good physics bachelors couldn't do at an equal or higher level with a month of training?
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Solving Indeterminate structures using the direct stiffness method.
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>>8351213
Physics Bach holders would be too busy stroking their own ego that they did physics to bother to learn the engineering their being taught. Biggest bunch of arrogant egomaniacs I've ever met.
>>
Lift.

>Sending particles through a double-slit apparatus one at a time results in single particles appearing on the screen, as expected.

>However, an interference pattern emerges when these particles are allowed to build up one by one

>This proves wave-particle duality.

Please send help I don't understand.
All the experiment says to me is that the slits alter the particle's position in a wave like manner.

How can we tell the difference between particles...
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>>8351721
Bump
>>
>>8351721
>positioned by a wave like force?
Explain yourself. Are you saying that something makes the electrons go through some complicated paths to form the interference pattern?
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>>8351734
I think that's what he meant. Seems reasonable to me too (not a physicist ofc). Maybe it's just some wave-like force exerted by slits that makes this wave-like pattern.

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prove to me that complex numbers aren't arbitrary circlejerking bullshit

>protip, you can't
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It's just a vector dumb dumb
>>
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This is you.
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>>8343354
>taking numbers out of your ass to be able to solve equations
>someone actually defends this

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This Universe is too fucked up to just pop into existence.

Somebody is fucking with us big time.

I mean what do we have, like, electron is making electric field when its stationary but magnetic when moving relative to the observer?

What the fuck?

Or dual slit experiment, jesus fuck what a mind fuckery. Do particles really know when they are observed by us? What was the scientific explanation for this?Regarding the observer.Do they mean that only sentient life are getting tricked by this?
Are particles sentient or someone just programmed them to...
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Don't mistake ignorance for intent.
>>
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>>8352954
that's not what "observation" means
observation works in the sense that a baseball bat observes a baseball when you fucking hit them together
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>>8352967
You said it yourself. Thats hitting. How can it be same as observing?

Are you saying that police radar affects the speed of target car?

That pic is rude.

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Someone on /b/ started a thread concerning the Lunar landing, and subsequent photos that exist of it.

As I am sure you have guessed by this point in my post, an alarming number of the posters believe it was fake. As it is almost impossible to determine if anyone posting on /b/ is serious ever, or trolling eternally, I've come here to ask you guys:

Do you believe the moon landing was real or fake? What is the evidence you use to support your claim?

Bonus points: Do you think we will return to the Moon any time in the near future? Why or why not?
184 replies and 13 images submitted. Click here to view.
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The moon landing was not fake. There are mirrors placed on the moon by astronauts that you can bounce lasers off of and detect the returning signal here on earth, thus proving man was on the moon.
>>
>>8348721
>Do you believe the moon landing was real or fake?
fake

>What is the evidence you use to support your claim?
1.) astronaut behavior in interviews as well as history of alcoholism in some Apollo astronauts.
2.) changed or retracted statements of Apollo astronauts
3.) photographic anomalies
4.) missing data
5.) historical fraud of donations to institutions, moon rocks.
6.) contradictions in physics
7.) fraternization of pilots...
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>>8348721
Not fake

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Please teach me obscure science facts.
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>>8348118
>>
>>8348118
False vacuum
>In a 2005 paper published in Nature, as part of their investigation into Global catastrophic risks, MIT physicist Max Tegmark and Oxford philosopher Nick Bostrom calculate the natural risks of the destruction of the Earth at less than 1 per Gigayear from all events, including a transition to a lower vacuum state. They argue that due to observer selection effects, we might underestimate the chances of being destroyed by vacuum decay because any information about this event would...
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>>8348118
its fisically impossible to burp and fart at the same time. air can only go one way through the body so if you were to do both at the same time air would be going out the same way and cause a embolism and death

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Can anyone explain how this equation was derived? It seemed out of nowhere to me
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>>8344746
Not sure how they came up with the equations but they are two valid equations that have the properties needed to prove their claim. If you look at both equations, they each contain (p^2-2) which is the central idea to the theorem.
>>
>>8344746
You're looking for a rational number [math]r[/math] such that [math] (p + r)^2 < 2 [/math].
This can be rewritten as:[eqn] r(2p + r) < 2 - p^2 [/eqn]Let [math] \displaystyle r = \frac{2-p^2}{s} [/math]. The hope is that this [math] s [/math] gets cancelled when you multiply [math] r [/math] by [math] 2p + r [/math] so that only [math] 2 - p^2 [/math] remains.
So set [math] 2p + r = s [/math] and solve for [math] s [/math]. You'll indeed find that [math] s = p + 2 [/math]
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How can I stop myself from trying to apply category theory to everything I encounter?

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Intelligent life is probably so rare in the cosmos and requires so many accidents stacked on top of each other for it to evolve that the nearest intelligent aliens are outside the observable universe.

Right?
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Racist.
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>>8348321
No, its probably common as hell
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>>8348866

What makes you think that?

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Why is it getting hotter?
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>>8348266
Because these dubs are hot fire
>>
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>>8348266
>>8348277
>>
>>8348266
>>8348277
Checked and Keked

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>intro physics class
>going through planetary motion
>prof is playing a random slideshow provided to him
>he is dumb as fuck Bengali who constantly fucks up basic shit
>slideshow comes to Ptolemy and his epicycles, along with diagrams showing how ridiculous the whole system is
>prof starts telling everyone that this is how orbit actually works, students nodding along with no clue

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>>8346959
>things that never happened
>>
>Be in the middle of a test
>realize there's this problem about something we barely covered in class
>try to solve it with what we learned in class
>look for a couple of values in a table
>that variable isn't even related to this problem
>See my friends are stuck in the same problem
>Go to teacher's desk and ask him wtf is wrong with this
>He laughs and just kind of stares at me
>Ask him why this doesn't make much sense
>"I guess I thaught you something that was not right"
>>
>>8346972
Literally happened 30 minutes ago.

When you go to an underfunded urban community college with 80% minorities, you see some shit man

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Give me the cold, hard truth, /sci/; is faster than light travel of physical matter in any way actually possible, and if so, is there any chance in hell humans could ever harness it?
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Probably not.
>>
All current evidence points to c being a hard speed limit.
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>>8350319
>All current evidence points to c being a hard speed limit.

There are valid mathematical solutions to get around the hard C limit, but all of them involve non-physical objects with nonsense characteristics like negative mass and negative energy.

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What does /sci/ think of this?
Some guy posted it on /pol/ saying he's tired of keeping it a secret.

It appears to be a device that produces energy from a water pump, electrostatic plates, a laser.
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>>8348455
>>
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>>8348460
>>
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>>8348466

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Is putting a 160IQ kid in a class of mostly average people during school as bad or worse than putting an average kid in a class with 60-80IQ retards?
I mean it could be considered torturous in both cases right?
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>>8344144
Like it or not that 160 IQ kid is going to have to learn how to deal with the average person which they won't have the opportunity to do if they're off learning by themselves.
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>>8344151
that's true, but learning the actual shit is equally important right?
>>
>>8344144
average to good public school?
... fine, don't bitch, classes get differentiated pretty early on.
shitty, neglected public school? yeah, unfair . smart kid startin off with one hand tied. snuffed out probably

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How close are we to reaching the limit of what is physically possible, in terms of our scientific and technological development as a species?

Is this about 90% of what we're going to get?

Or is there still good reason to believe that the future will be radically different? Could the world be as different in 2116 compared to the world of today as our world is from the world we had in 1916 or 1816; fundamentally different in many material respects?

Or are we likely to see only incremental improvements?
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> Or are we likely to see only incremental improvements?

That's how it almost always is. Lots of little steps add up to big changes after a while though.
>>
>>8344041
Far too close for my comfort. We've discovered most of what is to discover from a standpoint of things that will help humanity. It is more or less up to engineers to actually do something monumental with it. Materials tech is nearly a dead end for science. Genetics on the other hand still has a long way to go.
>>
>>8344041
>How close are we to reaching the limit of what is physically possible, in terms of our scientific and technological development as a species?
We are way too fucking far from reach our limit Anon.

>Is this about 90% of what we're going to get?
No.

>Or is there still good reason to believe that the future will be radically different?
The future will always be different.

>Are...
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Where were you when XKCD BTFO global warming apologists?
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why are liberals so desperate to push this heating meme?
When the place ain't heating at all?
>>
Is that the whole thing? It feels like it's missing an axis
>>
>>8342093
>muh snowball
Ok

Also, when already warm places become uninhabitable, where do you think those people (now essentially refugees) will go?

Have you ever skipped a class, /sci/?
11 replies and 1 images submitted. Click here to view.
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no, even if the professor says that a class isn't mandatory because it's a review day or something I still feel too nervous to actually not go.
>>
>>8350018

Yeah. I skipped the last day of class in Mathematical Logic when we were supposed to finish up the proof of Godel's Incompleteness Theorem. Felt pretty bad about it considering the teacher was very good.

Also skipped Anthropology pretty much all the time, because fuck that.
>>
>sitting in lecture
>kid in front of me watching ps4 unboxing videos
why

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What do you guys think of the 'cold dead eyes of a killer'? You know, that look that so often sociopaths have. It's quite hard to even describe but there's something. Something not right you can tell as soon as you look at certain people. The eyes are vacant and the stare intense. Is this a real thing and is there any explanation behind it?
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>>8349884

They are non playable characters added to the simulation and can be a bit buggy sometimes
>>
>>8349884
demonic influence
>>
>>8349884
Schizophrenics talk differently to normal people, I see no reason why psychopaths couldn't have different facial expressions.

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Which one ages faster, her Head or her Ass?
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My dick
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>>8349891
Im sorry bro
>>
Her ass, because it's so massive.

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Do humans need meat?
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>>8349854

No they need protein though
>>
No, but we don't need spices either (unless you count salt.)

But I'm not gonna give up either one because they seriously enhance my quality of life.
>>
>>8349856
Which doesn't have to come from meet.

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I'll start.

>What is the probability that given a certain level of facial symmetry (represented as a number in (0, 1), 1 being perfectly symmetrical) you are the most attractive person in a given population?

Some assumptions:
1. Facial symmetry is the only criteria we consider for attractiveness
2. Facial symmetry scores are approximately normal but the variance and mean are unknown

>If you do an experiment in a space ship traveling near the speed of light (say 99.99%) will the results of that...
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>>8349730

>99.99% speed of light

The results of the experiment won't be the same as if you did it on Earth because the Earth's not really an inertial reference frame. But the results will be the same as a spaceship travelling at any constant speed (assuming no gravity).
>>
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What will the world look like a thousand years from now?
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>>8349738
>constant speed
So it would have to be a body not experiencing any force?

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Just fapped sci.

I feel so fucking stupid, every time after a fap I just feel retarded, controlled by the primal mind and cant fight against sexual desire, why is this the case? I know sex/fapping is completely pointless and consciously know im just going to feel like an idiot afterwards but I STILL CANT RESIST

Makes me realize how pathetic humans really are in the end, no more than monkeys going in round about ways to fulfill primitive desires.
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>>8349635
Nigga that's dumb as hell.
>>
>>8349642
Can you please make more of an intelligent remark for what 'dumb' is?

I don't understand what stupid about this, don't you feel ridiculous being controlled? The coming and passing of sexual desire is so tiresome, you get horny and then you fap and now you're back to normal and can think straight.

The amount of stupid shit (think this porn star is really attractive, maybe I should go out and try to find a real gf/partner id treat her right, we can be complementary pieces to eachother...
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>>8349635
>I know sex/fapping is completely pointless
More pointless than the other things you might have been spending your time on? I doubt it.

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[eqn]\sum_{n=1}^x n = \frac{1}{2}(x)(x+1)[/eqn]
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>>8349372
[eqn]\sum_{n=1}^x n^{2} = \frac{1}{6}(x)(x+1)(2x+1)[/eqn]
>>
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>>8349373
[eqn]\sum_{n=1}^x n^{3} = \frac{1}{4}(x)(x)(x+1)(x+1)[/eqn]
>>
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>>8349375
[eqn]\sum_{n=1}^x n^{4} = \frac{1}{30}(x)(x+1)(2x+1)(3x^{2}+3x-1)[/eqn]


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