/sci/ pls help me I have no idea how to do any of this shit and my test is tomorrow. Can you post post some vids or something on what this is and how I do it.
critical values and points of inflection
intervals of concavity
intervals of increase
>>7799228
Critical points is the only part i understand, but wtf is concavity? And what is the chart at the side I don't understand that at all.
>>7799267
concavity-based on the sign of the 2nd derivative
the chart gives the sign of the derivatives of the function on different intervals of the domain(x-vals)
Behold the king of /sci/
https://www.youtube.com/watch?v=REeaT2mWj6Y
>>7798920
>math atheists
maximum autism
>>7798920
When the Gödel theorem first appeared many mistook it for a paradox, like Russell's, a contradiction within a system of mathematics. Many included Russell himself, Wittgenstein and Zermelo, at least according to the traditional view, see however Russell's response to Gödel's incompleteness theorems for a different view. The issue was that the paradox only arises if one mixes the levels of language. Gödel sentence is unprovable in the object language, the proof that it is nonetheless true is done in the meta language, if one properly distinguishes between the two the paradox disappears, and we uncover an interesting property of the object language. Russell, Wittgenstein and Zermelo were presumably thinking universalistically, within an all encompassing logical system.
>in freshman lab at my "prestigious" university
>first lab is fucking pipet calibration
>pipettes are impossible to fucking calibrate and the uni won't let us use micropipettes
gg ucla
>>7796713
>Not doing pure mathematics in undergrad to completely avoid team work and lab work.
>Not then doing a 1 year Masters in Mathematical [INSERT LITERALLY ANY FIELD OF STEM]
>Not then becoming the boss of everyone who took the undergrad option for that field
>Not then getting a 6 figure salary by your 5th year in industry
>ucla
You mean the school that pretends the most to be the Harvard of the west coast? Yeah, they're a huge joke.
And the faculty are so petty.
>>7796757
Nice. Care to share a pic of your rejection letter given by UCLA? It would be nice if you could attach to that the picture of your bitter and salty tears when you found out.
>y-yeah, so petty
If you could choose a single problem/conjecture to be solved in mathematics, which one would you choose?
RH
[math]\mathsf P \stackrel{?}{=} \mathsf{NP}[/math]
>>7793063
If P = NP, then obviously N = 1
SOLVED
Can someone explain the cost of a good undergrad STEM/Econ education to me? $70,000 per year makes absolutely no sense.
>>7789680
UChicago STEM/Econ degrees have one of the highest average ROI's in existence. Don't worry too much about the price tag as long as you plan on working afterwards.
>>7789686
How does one into Ph.D. In UoC?
>>7789725
Go to college at UoC
/Sci/, what the hell is this notation?
The first week of my Vibrations/Optics class, we get a basic math review. And most of it is literally middle-school tier.
Somehow I've gotten stuck on this. I've seen and used matrices before, but only in the case of augmented matrices for systems of linear equations, and I've never seen this kind of notation before.
What is this? I don't even need the answer, just the term to Google.
Thanks /sci/entists.
determinant
>>7801192
Determinant of a matrix?
Remember learning about Eigen Values?
Or about determinants?
>>7801192
Take the determinant of those matrices and set them equal to the value given.
So I'm sure this has a really simple explanation that I'm just not getting, but I'm wondering if you guys can help me.
In my textbook example of graphical symmetry, we're expected to calculate algebraic symmetry. The example we're given is x - y^2 = 1.
It claims that, of the y-axis, x-axis, and origin, it is only equivalent with the x-axis. The reason it gives is that...
>" x - (-y^2) = 1 is equivalent with
> x - y^2 = 1 "
How does that make sense? I know that graphically we can see it's symmetrical but, if we just looked at the numbers...
(x - y^2 =1) =/= (x - (-y^2) = 1)
I'm confused.
>>7801056
A reflection about the x-axis will take x to itself (it's the hinge) and y to -y (bottom goes up, top goes down).
>(x - y^2 =1) =/= (x - (-y^2) = 1)
They fucked up the parenthesis
x - (-y)^2 = x - y^2
>>7801078
Oh I see what I did.
It's the exponent. A negative times itself is a positive to the -Y becomes a positive Y anyway.
So it is equivalent. My bad. Thanks for this.
Yo, /sci/.
Does masturbation lower intelligence temporarily (4 to 5 days)? I know masturbation takes the edge off and releasesays endorphins that stimulate pleasure and relieve stress, but can that cause your IP to nosedive?
I ask because I masturbation once a week (sometimes once every 5 or 6 days), and when I do, I feel like something is slipping away.
If you guys know that feeling that you have when you can tell your subconscious is working away at who know what, that is what I am talking about. And when I masturbate, that feeling goes away, and I feel as though I just lost 20 IQ points.
My tests that are near the date I masturbate are around 87%, but those a day or two before are 100% (what I believe is my true intelligence).
Is this an effect masturbation or even sex has on people? Does it drag their intelligence down, or am I just being a complete fucking idiot and am having a placebo effect of sorts.
Tldr; does masturbation fuck up your intelligence temporarily?
Holy fuck, autocorrect really fucked me on this one.
>>7801034
at least someone fucks you.
Yes, ejaculating affects cognitive abilities temporarily.
>there is easily 10,000 times more archived information than you can ever know
REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
NUKE LIBRARY OF CONGRESS WHEN?
>>7801018
As long as they aren't hiding any significant mathematical proof then I don't care.
i've grown an increasing interest in both engineering, physics, and computer science. i haven't been able to separate myself with regards to studying how to program 3DCG, networks, database tree shit. same goes for physics due to condensed matter, solid state, QM, solitons, superconductors. then engineering for being able to do R&D for applications of these areas.
what can i do that lets me sort of pursue all three in one linear pathway in academia? can i do a mechanical engineering bachelors, get a physics masters, then a phd in computer science? or would i be laughed at for even thinking that's remotely viable due to prereqs? i'm kinda torn here.
like, none of the areas of study i'm interested in are under the graduate level. Induction heating, ion assisted film growth, lattice gauge theories, polymer engineering, chemical kinetics, viscoelasticity, sine gordon model...the list goes on. i have nothing but grad books on these areas and my undergrad just comprises of stuff like real analysis, thermodynamics, electromagnetism, and mechanics in the physics side. the CS side has stuff i already know, be it data structures, assembly, discreet math. then engineering which seems to have a ton of courses in CAD and MATLAB, but i already have personal skills in that too.
i just don't feel like i'd be spending my course space wisely in either program. i'd want to learn stuff i couldn't learn on my own, like plasma physics, nonstandard analysis, large cardinals, differential geometry, and then try to do research on the grad level that sort of integrates each area.
>>7800532
Get the undergraduate major that covers most of the fundamentals you need for understanding the more complex graduate/doctorate topics. The more in-depth your fundamentals is the better.
Also, interests change overtime. By the time you're considering what your undergraduate thesis is, chances are that's when you'll actually be solidifying your path. That's the time you can make a more efficient decision as to what masters/PhD you want.
Although chances are you'll end up working in a McDonald's by day, then making a dirty bomb in your parent's basement by night, with your current level of autism.
Fo' zozzle
>>7800532
Do you really need all that spoon feeding? Try learning them on your own. Especially CS since it's so very easy.
http://4chan-science.wikia.com/wiki/Mechanical_and_Aerospace_Engineering
http://4chan-science.wikia.com/wiki/Physics_Textbook_Recommendations
http://4chan-science.wikia.com/wiki/Computer_Science_and_Engineering
What do you think his IQ is?
Seriously, I can't find evidence on the internet. Is it safe to say it's over 200? Top 3 smartest people ever?
You don't "have" an IQ, you get a score on a test. On different tests you'll get different scores. Bill Gates has probably never taken an IQ test.
To convert your question into one that isn't dumb, yes, he very very smart. No, he is not one of the "smartest people ever," because there is no such thing.
>yfw Bill Gates was a math major and not a CS major
CS fags BTFO
>>7800547
>bragging about the "major" of a guy who didn't give two shits about school and dropped out
Does anyone have any recommendations for books on number theory? I just ran into the proof that quadratic surds can be represented as periodic continued fractions and that caught my interest. There seems to be a bunch of gems in number theory that I am unfamiliar with. Please share other neat results from number theory in this thread too.
>>7800274
An Introduction to the Theory of Numbers by Niven, Zuckerman, and Montgomery
A Classical Introduction to Modern Number Theory by Ireland and Rosen
Introduction to Analytic Number Theory by Apostol
>>7800274
This is taught in Calc 2 if it helps
Hardy-Wright
We are trying to reduce waste from sellafield and need to come up with an experiment of some sort. We have access to a cyclotron and access to a neutron bath.
We are drawing up blanks when it comes to finding something to test or carry out an experiment on. We do not have access to plutonium or uranium or highly radioactive waste/material.
Can anyone give us some ideas on what to do? We are looking at mainly the storage pools and the excess waste of plutonium. Any replies will be appreciated. Thank you.
>>7799912
All of the decay pathways are well understood. Just look them up and find ones that are either neutron or proton mediated.
Reduce which kind of waste? There is a huge range of stuff from waste material when making fuel to highly radioactive waste material from spent fuel and low level radioactive material such as used clothing.
Anyway, getting depleted uranium should not be too hard, there is a mountain of the stuff and people have no idea what to do with it.
Since I am a phycisist and have always wanted to exclaim "Stand back! I am a scientist!!" I'll offer a free suggestion: reduce waste by turning it to something useful.
Get some low level waste (avoid neutron and gamma sources) and place it on a solar cell to see how much energy you get out and how quickly the solar cell is damaged by radiation.
Next place a fluorescent material between the waste and the solar cell to convert radiation to light and lower radiation level. Again measure cell damage over time.
>>7800211
Literally, all the waste. Either find some use for it or help reduce it. The storage ponds are the biggest concern over here. No one literally knows what's down there. This is a huge safety concern but as of now we're running a project of sorts.
Need some sort of experimentation to do but the problem is we're not going to be handed spent fuel rods or any sort of radioactive waste. Just hoping someone can suggest some sort of experimentation to do in relation to reducing radioactive waste or decommissioning
.
If I locked 20 random people up and fed them exactly the same diet, would their poo eventually smell the same?
Not if their digestive system has pathogens beforehand.
If I locked 20 monkeys up and had them shitposting all day everyday would their shitposts eventually be the same?
>>7800555
Yes.
What arrangement of 8 legs will have the most vaginas between them, assuming that vaginas will only appear between legs that are distance x apart?
arrangement on what geometry?
Actually, too easy a puzzle, the following arrangement seems to be the most effective yieldings fourteen váginias:
_O_O_
O_O_O
_O_O_
__O__
Presumably, this solution also extends infinitely, with 7 legs being a hexagon, then further legs layering gradually to make larger hexagons.
Anyone got better geometric puzzles?
>>7799445
8 in what base?
