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Archived threads in /sci/ - Science & Math - 264. page
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Do any of you /sci/entists ever get the feeling you are not that good with math/science in general?

Everyone (friends, family, even teachers once in a while) says I'm great with numbers and logic, all my classmates look up to me, I get very good grades and all that, but I still think that doesn't mean a lot. Sounding smart to people who don't know much about science is pretty easy (that's why popsci is so popular in first place).
I know that if I ever tried to rise above what has been already discovered by real scientists and mathematicians, I'd...
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>>8137813
There's always room for improvement motherfucker.
Don't let contentment breed stagnancy.
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Yep. I get self doubt all the time. Walk it off and get back to work.
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>>8137813
>8137813
The more you learn, the more you realize how much you don't know. This is why normies think they know anything. Because they know nothing, and aren't even aware.

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So in the original Monty Hall problem there are two losing doors and one winning door. If you switch after the losing door is removed you have a 2/3 chance of winning and if you don't you only have a 1/3 chance.

What if there are two winning doors, one losing door, and the host always removes a winning door after your selection? You have a choice to change your selection after a winning door is revealed. Do you switch?

At first glance it would seem like you shouldn't. You have a 2/3 chance of picking the winning door initially, and after a winning door...
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>>8137518
>You have a 2/3 chance of picking the winning door initially, and after a winning door is revealed you have a 1/2 chance of winning by switching.
No. If you chose a winning door and switch, you lose. If you chose the losing door and switch, you win. Thus you have a 2/3 chance of losing if you switch.
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>>8137543
https://en.wikipedia.org/wiki/Monty_Hall_problem
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>>8137518
Yes because it improves my chances of taking 5 niggas with me

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Anyway to get rid of "brain fog" and get back into the "grind?" I had to take two years off of Uni because of family stuff, but now I'm going back in the fall and I've been trying to get back into the grove of studying over the summer but can't really focus or stay motivated like before. Used to be able to focus and study for long periods of time and want to study, now it just feels different. .

Does it just get better if you keep on grinding? I signed up for a gym because I heard that helps.
>>
Exercise will help as will getting out in nature for a while.

If you're into nootropics, I use Aniracetam (available online) and a choline source (many kinds out there, do some research to which will work best for you). Both help clearing brain fog.

You also might want to check out a supplement called FocusFactor which combines a bunch of brain booster supplements into one pill
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>>8137401
>nootropics
go away with that kiddie shit.
just grab some pervitin and get cracking
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>>8137401
OP here. Thanks for the info, I've actually been looking into nootropics. I just started caffeine and L-theanine and we'll see how that goes. I also got some Omega 3-6-9.

There exists a concrete polynomial $P \in \mathbb{Z}[x_1,\ldots,x_9]$ (aka a polynomial of 9 variables with integer coefficients) such that the statement "There exist integers $m_1, \ldots, m_9$ such that $P(m_1,\ldots,m_9) = 0$" is formally undecidable, i.e. neither provable nor disprovable in ZFC.

Furthermore, given any extension of ZFC, there will exist a polynomial with the same property with respect to it.

How does this make you feel? That something so concrete can be undecidable?
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>>8137298
It makes me wonder why exactly 9. Is it the lowest dimensionality for which that is true? I also doubt it's truthfulness. Have any sources?
>>
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>>8137298
It doesn't make me feel anything without seeing how this claim arises. Not interested in being parroted results.

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How to become a genius?
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>>8137229

put in thousands of hours of dedicated and unceasing work into your chosen subject
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>>8137229
Work your ass of. Thats it.
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>>8137271
>2016
>choosing to become genius in just one subject

Could someone please explain to me, a pleb tier undergrad, what Grothendieck did?
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>>8137131
He had a really big dick so we could say that he really grew a dick but because good grammar was not invented back then people did not know how to do past tense correctly so preople said he growed-a-dick so much that it became his nickname.

As time passed and most people forgot the origin people just pronounced the base of it like grouthadick and then it degenerated further into Grothendieck.

If you are talking with mathematicians then you might want to use Grothendieck but if you are talking with historians then growed-a-dick will be the only acceptable choice. But if you are talking with english majors then Grew a dick will be better.
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>>8137131
He went into hiding because his dick grew too big. He then donned the robes and beard of a wizard with a large dick, shunning society and it's average sized penises.
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>>8137155
>>8137152

I recently watched a television program in which a group of scientists explored a cave in South-East Asia in order to study the wildlife that lived in it.

The cave had already been explored and mapped, and there was already a high level of knowledge of its animal inhabitants, which were primarily insects, bats, and pythons.

The study consisted of capturing several of the pythons, calculating their population density, taking measurements of length and so forth. The pythons were not taken out of the cave, all data was captured in the cave. The pythons were obviously...
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4/10, was mildly annoyed.
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>>8137106
>I'll tell you what I think. It's because science isn't concerned with knowledge - knowledge is power and there was no power to be gained by this - it's concerned with destroying all mystery in the universe.

No, it's because scientists are selfish.
They evaluate the need to satisfy their curiosity as higher than the need to let things be.
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>>8137130
>selfish
sure

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Either a mental chalkboard or carrying out a detailed demonstration without the visuals.

I am absolutely handicapped in this sense. I need pen and paper even for the simplest thing.

I'd like to use a math book without having to write down the math, just do it in my head.
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>>8136989
I do mathematics entirely with pens. In class and out of class. For this I have sort of trained myself to think the entire proof before I even write anything.

This will probably stop in a couple of years as I am only a freshman in mathematics and the longest proof I have ever written on a test was for Euclidean Geometry and was just about half a page (face) long.

Still, keeping half a page worth of deductive reasoning stored in your brain at a time should be pretty impressive, I think. However, imagining...
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>>8136989
Serious maths - yes.
Serious physics? Definitely not.
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>>8137019
I'm not talking about memorizing proofs, as I used to memorize tens of them (otherwise I'll easily forget the reasoning). I memorized like a hundred proofs and proof like reasonings for a functional analysis test once, it took me a lifetime.

I'm talking about actively doing math in your head. Like, you want to write charts for a sphere in spherical coordinates as an exercise so you sit in a chair, do all your reasoning and once you are finished write down the final answer.

When I did this I used a pencil on a white table and it took me forever, through wrong attempts and useless ones. At the end I did it but I can't imagine something like this done exclusively inside my head. It would have taken weeks.

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>You can poor boiling coffee in a 1/16" thick styrofoam cup and pick it up.

>We still use foot thick rolls of fiberglass insulation

Do what now?
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>>8136808
pour*
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>>8136808

The jews, that is why.
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>>8136808
Woah.. what the fuck? look at that thing's teeth!

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If a human was put into space outside of Earth's gravitational field, with 0 initial velocity, where would he float and how long would it take?
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>>8136766
To the mass with strongest gravitational force nearby.
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The human would be part of an alternate gravitational field, in one way or another. "outside of Earth's gravitational field" could be anywhere, so it really depends where said human is. Same goes for how long it would take.
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>>8136770
Forget about the nearby, that was a mistake.

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What is the best LaTeX editor?
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>>8136576
Vim
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>>8136576
Emacs
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>>>/g/

Do you think humanity will never know what the first digit of Graham's number is? (In base 10)

http://mathoverflow.net/questions/20765/the-problem-of-finding-the-first-digit-in-grahams-number

http://mathoverflow.net/questions/20765/the-problem-of-finding-the-first-digit-in-grahams-number

http://math.stackexchange.com/questions/364949/first-n-digits-of-grahams-number

I've checked a few resources, and it looks like it's hopeless...
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>>8136478
it literally does not matter.
This issue is 100% worthless.
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>>8136478

quantum computing might help
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>>8136564
No. I mean, sure, who knows, maybe it will, but not in the sense that it would allow us to brute-force the problem.

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If a tree falls in the forest, and there’s nobody around to hear, does it make a sound?
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Yes.
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>>8136466
Sound is just the energy waves travelling through the air processes by the ear.

If there are no ears, there's no sound, but there is still vibrations in the air.
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>>8136466

can someone explain the utility of this expression? Someone used it in a message board I was viewing and the concept was lost on me.

must be my autism

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Why do we hear the sound waves and see the luminiferous aether waves and not vice-versa.
Do we able to see sound waves if we attach an ear to the optic nerve?
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>>8136344
Why can you see things that you remember with your eyes closed?
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>>8136344

>will you be able to see sound waves if you plug a microphone into a monitor input
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>>8136355
Because excitation from other sources stimulate those parts of the brain.

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Post popsci bullshit that makes you cringe af.

I'll start.

>>
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>>8136295

Literally anything involving quantum physics. It gets abused constantly in the form of "maybe magical bullshit is possible because muh quantum flapdoodle."

In terms of contributing a specific example to this thread, I was forced to watch this movie in a shitty interdisciplinary studies course back when I was in school and it's the worse thing I've ever seen:

I hate that "maybe we don't know some things therefore MAGIC...
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>>8136304
>I hate that "maybe we don't know some things therefore MAGIC IS REAL AND SCIENCE PROVES IT" attitude
I hate that radical empiricist "I CAN'T SEE IT SO ITS NOT THERE" attitude.

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Hey /sci how can I start to self learn topics of abstract algebra? Books, pages on internet, videos, magazines???
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>>8135793
A good source for supplementary reading and extra explainations is Keith Conrads notes (on pretty much everything in algebra):
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>>8135800
thancks m8
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Looks like you have a book there. Have you tried looking inside of it?

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what would it be like to encounter a species that is going across the universe helping other intelligent life forms survive and communicate across the dark abyss that is deep space by giving them advanced technology and scientific theories and methamtical models which advance our abilities to overcome the laws that seem to limit us? i imagine that if we were able to somehow advance our understanding of nature to the extent that we can travel across planets effectively through some form of propulsion, live preservation and extension, and information acquisition and storage, we...
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an emdrive with billion junction solar cells and cryogenic DNA data storage with superconducting quantum computers manipulating the ship and its abundant sensors/radars is the best approach.
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I too would like more advanced methamtical models.
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>>8135374
>how would we respond on the recieving end?
With gibsmedat #HumanLivesMatter

Any recommendations on books that aren't purely textbooks? I've been looking at pic to get ready for grad school.
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>>8133978
One of the best intro to Category theory books.
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I love this one. Soviet Union has a lot of fun books like this.
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>>8133978
Have you found the book to be worth your while?

if mass and energy are the same thing why aren't they expressed in the same units?
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>>8133878
Because c has units.
They're not the same thing. They're proportional.
>>
If temperature is just average kinetic energy, why don't they have the same units?
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>>8133878
Your premise that mass and energy is the same thing is flawed; If mass and energy was the same, then how would someting massless, like light, have energy?

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So we all know that you can factorise the difference of two squares easily, and also for two cubes, but is it possible to factorise the difference of any two numbers raised to the same power in the same way?

What about two numbers raised to different powers?

And what about the sum of two numbers raised to the same (or different) power(s)? Are there any powers that work every time?

Please excuse my use of paint.
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>>8133668
[eqn]a^n - b^n = (a-b) (\sum_{i=1}^{n-1}a^i b^{n-1-i})[/eqn]
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>>8133688
Correct me if I'm wrong but isn't binomial theorem is about (a+b)^n ?

I'm looking for stuff on (a^n)+(b^n)

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paranoid people removes metadata from files when upload them to internet, but what if some companies hiddes user information inside data, for example in pictures could be an unique id per device in certain pixels.
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>>8133289
>what if

That's been done since before the internet and continues today.
>>
Camera pixel noise identifies you anyway
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>>8133289
It's already being done. Printers embed their identifiers on every page. Of course it's very well hidden, but government agencies probably have all the documentation.
http://www.instructables.com/id/Yellow-Dots-of-Mystery-Is-Your-Printer-Spying-on-/

It's not too far-fetched to imagine the same being done with digital cameras too...

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What does /sci/ think of:

Finance
Accounting
Marketing
Human Resources
Operations Mamagement
Public Relations

areas of study in general?
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>>8133261
I've always had the impression that accounting is something that sucks the soul and life out of you
>>
only accounting is a legit undergrad major - maybe finance depending on the program
the rest can be done with any type of degree, preferably from a good school

my friend did accounting at usc and came out making good money; now works in tv in nyc
even people that go to cal poly pomona do alright for themselves
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>>8133265
It does. And it's boring as shit.

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Favorite amphetamine /sci/?

I'm on Adderall IR right now but I soon hope to switch off as the recommended dosage just makes me sleepy, anxious, and makes it hard to study. Thinking about switching to Vyvanse.
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>>8132879
Currently using 3-FPM. Research chemical. Works quite well.
>>
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I'm rather a fan of the 2,5-Dimethoxy-4-chloro-3-phenyl-4,1-ethyl-diphenchloromethamphetamine
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>>8132879

>when being junky is considered /sci/

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Where exactly did viruses come from, and what purpose do they serve since they are not alive?

Also did viruses facilitate evolution at all, and could we make good viruses and inject them into ourselves to make ourselves evolve or live longer or whatever?
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There are good bacterias that fight bad bacterias but the only purpose a virus serves is to rape shit up. Viruses are basically hacking organisms and multiplying using your body as a host meanwhile turning your cells into their cells and slowly changing you into something else, so I don't think there can be any good use for them at all.
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>>8145799
>what purpose do they serve
Back to school with you.
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>>8145807
Could we extract from say the HIV virus all of its genetic material and make new genetic material and insert it into the virus?

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Holy fuck. Physicist here. I've been trying to understand consciousness every day for years and last night I suddenly had a realization so profound I don't think there's a single human being on earth who's thought the same thing. I figured out the consequences this morning and they're fucking Ming boggling.
>>
The consequences were somethings I thought of several years ago, but thought it was too ridiculous to be true.

Can't wait to prove how full of shit and what a faggot I am.
>>
>>
Well?

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I was just reading about AlHazen (Ibn Al-Hatham). From almost every source I've read from, people agree that despite being virtually unknown in the modern West, he was an extremely important figure in the history and philosophy of science, as his experiments in optics were essentially the first step in the development of what would one day be called the scientific method.
Black science man despite being really critical to religion (including Islam), he admits that "Ibn al-Haytham was the first person ever to set down the rules of science."

Alhazen's...
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>>8148194
You know that Muslims became extremely anti-Western, and anti-
science after the invasion of Palestine, and even more after the Irak intervention by the USA.
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>>8148209

I've been doing some research, it seems there were always anti-science extremists, even during the time of Islam's pro-science age. These people were mostly ignored and unheard of, but when Baghdad got sacked by Mongols, and libraries were burnt and scientists were slaughtered, these people came out and went "See, this is God's punishment for studying science, instead of praying and worshipping him"
Then when the exact same thing happened in Cordoba,...
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>>8148215
Intresting, I will try to find some information about the events you talk about. But i think there is another explanation : "Islam's pro-science age" took place at a moment where Western Science was almost non existent, due to the catholics censoring everything which wasn't in accordance with the Bible. So the Muslim scientists of this period (XIe to XIVe) are better known that those of other periods.Even tho there has been Muslim scientists at any period. But I really think that the fact that anti-science...

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They just won't fucking stop linking smoking to as many unrelated diseases and conditions as they can, won't they?

When will the scientific community finally snap out of it and realize correlation =/= causation?

https://www.sott.net/article/268159-The-myth-of-smoking-during-pregnancy-being-harmful

http://www.dailymail.co.uk/health/article-514330/Smoking-months-pregnancy-does-harm-baby.html
>>
why are you pro-smoking and making these dumb threads you cancerbag retard ? do you enjoy misinforming people ? did marlboro put you on payroll or something ?
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>>8141189
>shill gambit

Come on, why stoop that low?

I think it's pretty clear there is far more to the "smoking is bad" story than what people are accepting as fact. Far too many times, other factors are involved. Far too many times the "science" is just shirty surveys like the ones in the 1950's that were manipulated to get the desired results of the researchers (and I'm pretty sure THAT is pseudoscience).

If there is a genetic reason, or...
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>>8141201
So they're printing these just for the fuck of it ?

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Use this /sqt/ to post questions that don't deserve their own thread. Last thread:

>>8117451
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>>8135619
Girls und panzer?
>>
This is my question. Let's say I have x=cos t and y=sin t, and I'm asked to plot from 0 degrees to 60 degrees, get the equation of the tangent when t=20 and lots of other stuff like that.

What's the name of the topic I gotta lookup to find this stuff? It's related to vector calculus.
>>
is it worth pursuing a degree in chemistry? i've realised i love it, even the incredibly boring bits

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why french are best?
>>
It's probably in their genes but we can't study it because of politically correct SJW libtards.
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>>8142873
Why do the French love showing people their gold coins?
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>>8142873
I don't know, are we? What does "good at mathematics" even mean anyway? Cause academically speaking I really doubt your average French math student is any better than another. Even the West African curriculums are way more complicated than ours.

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How close are we in genetic terms? I've heard 95% from some and 99% from others. I think it's about 97%, but I'm just a layman.
>>
define close
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>>8138076
I mean as in "how closely related are we?"
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>>8138077
>retard detected

Go take a course in math and biological phylogeny, idiot

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