Archived threads in /sci/ - Science & Math - 190. page

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>>9100698
Partition of a number, N, into exactly 3 parts.

Incidentally the number of ways to do this is the same as the number of partitions of N whose largest part is 3.

>>9100831
>incidentally
Boy you need number theory

Partioning a number n into m parts kan be done in (n-m-1)C(m-1) ways

>>9100595
theoretically i think yes but i think your problem would be applying exactly the same amount of force to exactly the same spot on exactly the same coin.

>>9100595
I suppose you could. I don't see any reason why this wouldn't work.
Reality is weird, though, so if it doesn't work there could be some other reason.

1. You would need to be in a vacuum

2. Even then the coin would lose integrity every flip

3. Also the machine would lose strength

>this thread will get replies

I...I can't....REALLY?! You MUST be joking. There's no way someone can be THIS stupid. Just...what? Ugh...go read a book dude...

>>9100537
No it won’t

>>9100426
Fluid dynamics is not well enough understood, yes.

It's not exactly mysterious, fluids have viscosity, density, energy... with enough computing power you could model turbulence pretty well.
The problem is there's no neat little equation describing turbulent flow so you have to use dirty numerical methods and approximations.

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>>9100426

>>9100419
His forehead is so large that it makes his jacket too tight.

>>9100498
It's... Photoshopped....

>>9100419
the phenotype donald.

because it's cool

he wanted to kill everyone for making fun of his eyebrows

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>>9100386
posts like this is why i come to this shithole

>>9100199
Might be a fun class, any references on the material being presented? It says it's all new but it'd be weird to teach a class completely devoid of any previous results

>>9100199
>Who here thinks they are smart enough to take this class?
If it only requires linear algebra, then probably 50% of this board.

>>9100199
How the hell do you teach someone higher lie group theory with only linear algebra?

joe rogan
sam harris

Dayum Ed wittens daughter looks like *that*?

Just listen to bob Ross or Jeff bridges sleeping tapes.

>>9100065
it was created by the same people who faked the moon landing, duh

>>9100065
Do you know how a sextant works? Very basically: you can measure youre position on the planet with it just by looking at certain stars through a special tool.
So now it becomes easy: just travel along a coastline and measure youre position every now and then, and mark the positions on a blank map. Then combine the dots and you get the actual shape of the coast.

I have no idea if thats how they did it, but it seems like it would work pretty well assuming the sextant is good and the intervalls arent too long. Wind has to be pretty constant too but you could get around that by using oars...

>>9100347
>just by looking at certain stars

Yeah, that's all. Piece of cake.

>>9100040
it's 5, going vertically down the columns you add the top and middle to get the bottom one.

col 1: 3+2=5
col 2: -4+1=-3
col 3: -1+3=2

>>9100052
>writing out columns from left to right instead of rows
Just stop.

5. Treat the outside loops as positive values and inside loops as negative values. Add adjacent symbols. Third symbol in chain is the result.

First row: 3 + (-4) = -1
First column: 3 + 2 = 5
Or I could be retarded.

I'd guess it has to do with the distribution of labor for the majority of human existence. Men have historically been used as hunters, soldiers, etc. Every army needs at least a few smart people on top, and some grunts at the bottom, which leads to variability in intelligence being acceptable. Women have historically been used as gatherers, house tenders, etc, and thus generally need medium intelligence across the board in order to perform properly.

It should also be noted that we're talking about intelligence as a whole, rather than more specific forms of intelligence that each sex needs in order to perform the roles they've been historically restricted to. I don't believe general IQ is a very accurate predictor of how people will perform at various tasks.

>>9099956
Men begins evolutive factor,women selective factor.

>>9099956
Lots of intelligence genes are on the x chromosome so men have more extreme phenotypes like with other x linked things.

>>9099779
Why would you care about your degree having a specific name when you would be doing the same work regardless?

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Are programs like these more selective or less selective? I want to say less selective because a nascent field obviously wants to cast a wider net to attract more people, but them being more selective makes just as much sense too.

>>9099782
I want to get into population genetics which is also a specific career that you can go into that is different from regular biology and genetics.

If a number exists and satisfies an equation, that fact doesn't change just because you can't deduce the number's value using certain methods.

>>9099662
Yes - so is it just a deficit in method, which can be overcome (hypothetically)?

>>9099656
Unsolvability of polynomial equations above degree 4.

Three-body problem.

Arc length of an ellipse.

Maybe our questions and models aren't compatible.

Taylor series are pretty good at approximating things, but they might not be the most "natural" representation.

Physicists have names for the first four terms:
Position, Velocity, Acceleration, Jerk.

If you use Fourier series you have:
DC component, 1Hz, 2Hz, 3Hz,...

Both of these representations can be used to approximate things very well, but each one is more useful for different types of questions.

If you want to, sure

>>9099548
will i be able to understand it or do i need a background of geometry and all that shit

>>9099546
>>9099551
Just read it. It covers everything you need that why it's called Basic Mathematics.

Do khanacademy and use http://www.stitz-zeager.com/szprecalculus07042013.pdf with it.
Videos are great for understanding, but absolutely suck for retention and learning. They only make you feel more confident in the material.

I never really liked serge langs basic mathematics for someone doing it for the first time. Feel free to go through it once you're done with the above

>>9099527
you gave me a virus.

>>9099527
why khan academy, it takes too long and the guy is a faggot