Come here to talk about the true model of the cell, based on water structuring
No one cares nerd
>>8515233
Thank you for your contribution
>>8515233
/thread
What will the sun's final kill count be?
about tree fiddy
>>8515244
this
/thread
b = a
ab = a^2
a^2 + ab = a^2 +a^2
a^2 + ab = 2a^2
a^2 + ab - 2ab = 2a^2 - 2ab
a^2 - ab = 2a^2 - 2ab
1(a^2 - ab) = 2(a^2 - ab)
1 = 2
Explain
>Pro tip, you can't.
>>8515180
a^2-ab=a^2-a^2=0
(a^2-ab)/(a^2-ab)=0/0
a^2-ab)=/=2(a^2-ab)
>>8515180
> 1(a^2 - ab) = 2(a^2 - ab)
i.e. 1x0 = 2x0
> 1 = 2
Does not follow.
0/10. Not even /b/-tier.
>>8515180
a*a is no the same as a^2 stupid retarded brainlet
Anyone here ever joined a Maths Olympiad competition or any other well known maths competition? I just got selected to represent my university for an inter-university competition. I want to hear your thoughts and experiences.
>>8515176
bumping for interest
>>8515176
I have been selected for the "Concours Général" in France, the exam was as a level completely different from what i have seen before.
The fun fact is that we had 6 houre to do it but it wasn't even made to be finished
>>8515176
you will get raped
Ready your palm branches my fellow /sci/entists, for this /mathgenius/ has returned.
https://warosu.org/sci/thread/S8427835
I have scored a 98 on my second diffeq midterm. Save your applause. I just thought I would let everyone know.
i'll fart in ur fucking face u gassed up cunt
>>8515075
>diffeq
you're still doing basic arithmetic
learn real math pleb
>>8515075
>differential equations
>lower division math
fucking jej, any monkey can memorize a couple methods of solving algebraic equations and ace a class like that.
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.260403
(excuse my lack of familiarity with physics nomenclature)
In the current version of this experiment (without the currently impossible pass-through measurement devices), physicists say that the light does not decide to be a particle or a wave until measured. But what happens if we somehow measure it before forcing it to be a particle or a wave? Will it always be a particle because there's no uncertainty at the point I've placed the measurement devices? If so, is there a way to introduce uncertainty?
Sorry if this is a dumb question.
please respond
>>8515029
What does "particle/wave detector" mean?
How does it detect? Is it a double slit?
>>8515759
I have no idea how the detector that would allow it to pass through would work. As for the other detectors used in this experiment, the measurement devices at the end result in a similar pattern to the double slit when it's a wave, which is how they distinguish between wave and particle.
Let's say that for the purpose of this thought experiment, it uses the same mechanism but lets the particle pass through.
How can I approximate someone's intelligence without directly putting them to the test?
I am attracted to girls who are smarter than me but I'm pretty smart so such girls are hard to find.
Also, I'm ugly so any smart educated hot girls are out of my league.
I'd have no trouble going for an ugly girl but then we would have ugly children, so what's the point? Shit sucks.
So my only option is a hot smart girl who is uneducated (think Christian community girls). I know some happen to be smart. But how does one go about figuring out the intelligence of such an girl?
>>8515023
go meet people.
If you like a girl you meet, date her.
If you don't like her after some time with that, break up.
Repeat until you're happy with someone. You don't pick a girl based on a formula or how ugly your kids might be.
>Also, I'm ugly so any smart educated hot girls are out of my league.
you shouldn't really think in terms of league, assertiveness is way more important than attractiveness when it comes to seducing women. I think most of us have seen hot chicks with average or ugly dudes. At worst you'll get rejected, but it's still good training.
As for detecting smart people, I think the easiest way is to check if they understand sarcasm (don't do it too soon though, it's hard to detect sarcasm when you don't know whether the person you're talking is just kidding or is actually being serious and retarded), or try talking about more abstract concepts.
>>8515023
Talk to her for half an hour.
>In a HS Calc 1 class
>Teacher doesn't teach with book, uses her own notes and stuff
>Chapter is integration
>"This shit is so easy"
>"Hmm.. Maybe I should look inside a legit math textbook for once and see if I can follow the more formal stuff"
>Go to the integration chapter in Spivak's
>Can't understand
Am I a brainlet? Why don't I understand this? Learning in class is easy, but when I go back to review what I've learned in a math textbook, I can't follow the formal definitions and proofs. A lot of it is the notation/ syntax they're using that I don't understand. Can I fix this? To be fair, I didn't spend a ton of time trying as hard as I could to understand the proofs. Does it usually require a ton of effort for more simple topics like this? I want to be a math major too..
>>8515017
Turning immediately to the integration chapter and then complaining you don't understand the notation kind of go hand in hand. If you read it from the beginning (and the textbook isn't shit tier), all the notation the author uses will be defined, especially for an introductory text. As for the proofs, if you're not trying to understand them you're not going to understand them. I don't know what else to tell you.
>>8515027
I just kind of assumed that the topic could be read over in the textbook separate from the rest if you already have an understanding of it and the previous topics covered. I guess it would've been smarter to follow along through the book from the very beginning. Looking at it just intimidated me greatly since I'd like to be a math major (actuarial mathematics in particular)
Fortunately, I'm going to retake Calc 1 in college because of how shitty my HS calc class was, I'd like to get a better understanding of it.
>>8515017
Because you're a retarded high school baby who has only been exposed to basic algebra so far. Reading formal mathematics is a skill that you need to practice. So, yes, spend a bit of time trying to understand Spivak. Make sure you fully understand every single sentence and word and how each step follows logically from the previous. If you come across a term or a piece of notation you don't understand, flip back to the part of the book where he explains it. Every term has a precise definition.
It's a good thing you're starting to do this now, if you want to be a math major. The earlier you learn this skill, the better, because the math you encounter in university will almost all be formal.
What are these reactions called and what should I look up to figure out how to do them?
For those of you who are not owls :^)
https://en.wikipedia.org/wiki/Carbonyl_group
>>8514981
Carboxyl group reaction can move double bonds around when protons are present
Sci, think about this, is this possible?
is not there a predefined path that will lead me to the solution of every math problem? if not, prove it.
>>8514828
Yes anon it is time to realize your destiny is to solve all of the math problem and pull ridiculous engineer dick only to have them realize your social skills are sub par from being such a math experts that you can only have sex with the most autistic engineers.
>>8514828
Does the set of all sets contain itself?
>ZFCtards btfo
>>8514828
Yes and no.
Start with a set of axioms and a proof system. Enumerate all possible proofs until you find a proof of either A or ~A, where A is the proposition you want to examine. Thus method solves all solvable math problems.
However, by Gödel, not all math problems are solvable. There will be statements S such that you can neither prove S nor ~S.
Who else doing nofap December?
How's it going it going if you're doing it and if you aren't, why?
>used to fap minimum of two to five times a day, every day
>usually,in order, using the following methods: pics, gifs or video
>over 1200 pics/gifs/videos saved
>quitesmug.jpeg
>decide nofap December
>almost a week in (started 2 days earlier)
>no visible increase in productivity
>still shit post, waste time on YouTube
>attraction to girls when around them hasn't changed
>Inb4 gay
>arrive across occasional nude female pic on 4chin
>feel disgust
>no increase in energy
I haven't gotten any superpowers, yet. I'm 6 days in, if not a week has passed (I didn't think I would do nofap so only started counting when December hit, realising I'm doing nofap)
The main reason I'm on nofap is going outside more and having less free time because of college work/projects
The only good point so far that I feel even when a day into nofap is not feeling dirty meaning I feel less need to shower everyday.
Nofap is shit and useless.
Do NoPorn, it actually is god for your brain.
>>8514671
>no porn
Explain how it's good for the brain.
And how do I fap? Are nude pics, or pics of nice female faces good? Or do I use my imagination
I've successfully conquered this last NFN, but couldn't last a week on NPN. I used to fap w/o porn quite often a few years ago, but now it's just not enough, and takes up to 30 mins. Got any info on those stuff?
What's the significance of eigenvectors and eigenvalues with respect to real phenomena, /sci/?
I already have a degree and I still never made the connection between the mathematical and the physical and it still bothers me...
To keep a simple case, let's say I have a 2x2 matrix $A$ and a vector $\vec{x}$. If I assert that $A \vec{x} = \lambda \vec{x}$, I am saying that my matrix can be replaced by a scalar. If the determinant is then 0, it means my vectors, at appropriate eigenvalues, are linearly dependant.
But what does that mean for the physics? How does this tie in with all the bullshit about oscillating at natural frequencies?
>>8514469
Whelp that tex failed
>>8514469
I recognize this slut.
>muh physics
It's simply an interesting question to ask of a linear transformation.
What if I told you this was a density plot of the eigenvalues of random 5x5 matrices drawn from {-1, 0, 1}, and that we simply do not know why this pattern looks the way it does? Demands further investigation, don't you think?
Hello, is there a way to make wolfram calculate limits without using l'Hospital's (show step by step solution)? Or any other tool? We are not allowed to use l'Hospital's rule yet.
Consider the function
[eqn] f(x) = \begin{cases}
\frac{1 - \cos(x)}{x} & \text{ if } x \neq 0 \\
0 & \text{ if } x= 0
\end{cases} [/eqn]
Then
[eqn] \lim_{x \to 0} \frac{x^2}{1 - \cos(x)} = \frac{1}{ \lim_{x \to 0} \frac{f(x) - f(0)}{x}} = \frac{1}{f'(0)} = 2[/eqn]
>>8514457
How does this work? Sorry for not seeing it :(
>>8514457
I assume he isn't allowed to use l'Hopital yet because the derivative hasn't been formally defined in class.
What's up /sci/entists. I just heard a Muslim idiot claiming that Big Bang isn't real because nothing can only create nothing.
What are some of most plausible theories about where that dense point of singularity came from?
So far I heard it could be older universe shrinking into one point and that our universe could be part of multiverse that existed since forever.
What do you think? I have just basic science understanding.
>>8514352
Huh, I recently had a muslim guy claiming all the great discoveries of the 19th and 20th centuries were from muslims (EM, relativity, quantum theory, computers). It is astounding how deluded people can be.
No one ever said "nothing" created the Big Bang. We don't actually know what started it, though some of the more wacky M-theorists and such claim it was the collision of higher-dimensional "membranes" that led to an explosive release of matter and energy, and the laws we observe are simple woven into the spacetime of that system.
There is absolutely no conclusive proof of this though, and the math/physical reasoning can be very shaky at times with it.
The theory you describe is called the "big crunch", and it is generally not considered the case by cosmologists nowadays. This is due to the solution of the Friedman equation being equal to zero. This, however, is only strongly inferred, not conclusively observed, as we can't accurately predict the energy density of the universe. This is ultimately due to a shortcoming of our instruments, and the limitations of the Hubble volume.
>>8514352
God did it \thread
>>8514400
Demonstrate your god exists, bro
Why don't scientists look for exoplanets from there? There could be one just 1 light year away from the direction of the south pole
I can't tell if you're baiting or power-stupid.
We have telescopes in space. We've mapped the local stellar neighborhood. The closest star to us, Proxima Centauri, is ~4.24 light years away.
>>8514342
>What stars are only visible from Antarctica?
None of them.
>>8514364
/thread