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What level are you operating on, /sci/?
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>>8811678
didn't you mean to put this on that picture of the 4 brains?
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>>8811678
A faulty argument does not indicate the conclusion of false.
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>>8811713
*is false.
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redpill me on mathematica
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always do the opposite of what stephen wolfram says
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invented by a jew, that should tell you enough right there
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I like it. Has a pretty steep learning curve and sometimes basic tasks can take forever to learn how to do. Once you get over that though, it can really "automate" math and can make doing lots of problems doable.
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I need to come up with a formula for a personal project to fit 7 data points that are, most definitely, not in the same quadratic. Is there a reliable method or formula to solve for an equasion where n points is greater than 3? I've looked for a few days, but haven't found anything.
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>>8811382
Create a system like you normally would in the form Ax=b where A is your matrix with rows (0,0,1), (1,1,1), (4,2,1),...,(36,6,1), x=(a_2,a_1,a_0) where your desired quadratic is f(x)=a_2x^2+a_1x+a_0 and b=(pi,pi,...,384). However, clearly you're system is overdetermined. Compute the least square quadratic via solving x=(A*A)^(-1)A*b where A* is the transpose matrix. If this does not work, try x=(A*A+eId)^(-1)A*b where e>0 and Id is the identity matrix. Choose an e sufficiently small and you should get something reasonably close to an actual solution. Look up Tikhonov approximation if you're interested. Need functional analysis though.
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Y = 1.366exp(0.800X)
R^2 = 0.875
It's an ok fit but not great
Why not just use a 5th degree polynomial if you want a perfect fit?
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Lets say I'm a flat earth believer, you have one argument to make me change my mind to believe that earth is round. Which argument will you use?
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http://lmgtfy.com/?q=proof+earth+is+round
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>>8811365
The argument that there are multiple arguments of the earth's roundness.
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>>8811365
Do coriolis force experiments and convince yourself.
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Question for medfags/physiology majors. Why does my sugar drop below normal levels even though I'm not diabetic or on any insulin? I notice a pattern at work where, after a light breakfast and a coffee right when I get to work, I get real shaky and weak and hungry 3-4 hrs into work, and I'm pretty sure its because I'm hypoglycemic.
Shouldn't my liver be compensating for my BG? I had a blood draw a month ago and my random BG came back at 3.2. A week later did FBG and A1c, which were 4.6 and 5.2 respectively. Also don't know if its worth mentioning but on the day I was 3.2 my urine was at a pH of 8.5 and I was proteinuric.
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>>8811268
You probably have AIDS.
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>>8811268
Hi, what people in first world countries dont know is that they are whats called PRE TYPE 2 DIABETIC: does an apple taste as delicious/satisfying as a new york cheesecake? if it doesnt then you are pre-diabetic.
eat more fat
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>>8811268
>Why does my sugar drop below normal levels even though I'm not diabetic or on any insulin?
You're probably diabetic.
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Why don't universities offer students to take exams for courses without taking the course itself in exchange for a discount?
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>>8811151
https://clep.collegeboard.org/earn-college-credit/get-started
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>>8811151
Because a lot of people would go for it, fail and produce nothing but work. It's retarded.
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>>8811175
this
>mfw realizing functions from [math] \mathbb{R} \to \mathbb{R} [/math] are just uncountably-infinite dimensional vectors
>integrals are just a way to sum uncountably many values that are zero
>because we have a norm on an [math]L^p[/math] space, we can define a topology, and given the topology we can make a Borel [math]\sigma[/math]-algebra on [math] L^p [/math] creating the measurable space [math](L^p(S), \mathcal{B}(L^p(S))[/math]
>on this space we can create a new [math]L^p[/math]-space
>we can continue in this manner until we have any number of embedded [math]L^p[/math]-spaces
>mfw realizing all this
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Bump brainlets
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Yes but this is all basic analysis
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>>8811006
Who are you quoting?
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Noob here. If the Earth revolves around the sun, and our Solar System revolves around the centre of our galaxy (Milky way)... Around what revolves the huge amount of known galaxies?
Also, do they behave like the most elementary atom?
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The largest gravitationally bound structures are local galaxy groups. They revolve about their center of gravity, largely dominated by dark matter. The overall structure of the universe doesn't revolve around anything.
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around each other
or god lol
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https://en.wikipedia.org/wiki/Great_Attractor
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>"I like to get my classes out of the way early!"
What the fuck is wrong with these people?
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>>8810912
Just brainlets that actually don't like what they're studying and are going for the money.
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>>8810912
>I want to spend 2 extra years because I chose to do my classes late and this one class sucks to now I have to retake it, again.
(You) are you as smart as you think you are.
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What were primitive humans psychologically like
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>>8810820
Define primitive. Humans from 50,000 years ago were the same as us. Before that we are not so sure. We only observe modern human behavior starting 50,000 years ago, but are unsure if that capability was there all along since anatomical modernity ~200,000 years ago.
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>>8810820
Child-like, lacking in self control, prone to impulsive explosions of emotionality.
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>>8810836
anatomically modern, were they more psychopathological than moderns
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How can I become an arithmetic ninja?
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Learn tables till 15?
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>>8810780
>arithmetic ninja
why would you want to do this?
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>>8810780
Drop out of school
Anonymous
Most influential/impactful scientist post-Newton? 2017-04-07 04:10:49 Post No.8810705
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Most influential/impactful scientist post-Newton? 2017-04-07 04:10:49 Post No.8810705
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Most influential/impactful scientist post-Newton?
Anonymous
2017-04-07 04:10:49
Post No. 8810705
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Not the most intelligent, nor most published, solving many mathematical obscurities, etc.
Who has propelled science and mathematics in general further than anyone else? Who can we attest the most credit for our current understand of science and mathematics, considering how widely dispersed fields of study are in today's world?
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Euler
http://www-history.mcs.st-andrews.ac.uk/Biographies/Euler.html
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>>8810708
this is a good answer
its a good question op, but note this is subject to change over time
some branch of maths that may seem irrelevant today could be inadvertently laying the groundwork for a paradigm shift 100 years from now.
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>>8810708
Euler is my favourite mathematician, but was he a scientist? Did he ever do some empirical work?
Anonymous
Alt enrgy & Oil scarcity effect on shipping 2017-04-07 11:29:10 Post No.8810337
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Alt enrgy & Oil scarcity effect on shipping 2017-04-07 11:29:10 Post No.8810337
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Alt enrgy & Oil scarcity effect on shipping
Anonymous
2017-04-07 11:29:10
Post No. 8810337
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So with oil scarcity on the horizon in the coming decades, and the shipping industry being 100% reliant on diesel, what are some alternative energy sources we'll likely see to replace diesel for our mighty container ships?
>Nuclear
Unlikely, that would make simply building a boat unreasably expensive. There's also the issue of meltdowns and waste water polluting the oceans.
>Wind
This would be really interesting to see. Is this even possible?
>Fusion
We probably won't get cheap fusion reactors until we're way past the point where we're out of oil.
>Biodiesel
Possible stop gap solution. Id be concerned about its effects on farmland though, since right now it's only viable in Brazil and Brazillian land degradation is a pretty serious issue right now, so who knows how this will fare as a long term solution.
Any ideas /sci/ ?
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>>8810337
Slave labour like the good old days.
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>>8810345
Well that answers my question. Mods delete the thread please.
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>>8810337
Are you not aware of the fact that a large number of nuclear-powered ships already exist?
Anonymous
ITT: We share things we realized that made us feel clever (be them stupid/obvious or not). 2017-04-07 12:18:01 Post No.8809375
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ITT: We share things we realized that made us feel clever (be them stupid/obvious or not). 2017-04-07 12:18:01 Post No.8809375
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ITT: We share things we realized that made us feel clever (be them stupid/obvious or not).
Anonymous
2017-04-07 12:18:01
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Sorry if this is pretty obvious for those deeper into CS and perhaps AI shit.
I'm studying mathematical logic. In simple propositional logic, you have formulas, and you can deduce things from them using inference rules. So, say you have an argument with a bunch of premises, P1, P2, ... , Pn, and a conclusion supposedly drawn from them. To prove that the conclusion can be drawn from the premises, you have to play around with the premises, using inference rules to modify the premise formulas, until you reach the conclusion.
So, I realized, say you have a formula. When you apply an inference rule to it, you create a new formula, which is "connected" to the previous one by the rule you used. From every new formula you can "spawn" new ones using inference rules.
In this way, you have a directed, weighted graph where nodes are logical formulas, weights are inference rules, and the edge directions represent a relationship "original formula => formula generated by applying the weight/inference rule of this edge". Thus, and here's the thing, finding a proof is a graph search problem: you start from a bunch of formulas that are your premises, generate a graph with formulas, and then you search for your conclusion in those formulas. The proof *is* the path between your premises and your conclusion.
I'm still trying to tie the idea of having *multiple* premises to draw a conclusion from, perhaps you do a big AND with all of them and then use that as your single-source for the graph search algorithm.
Pic related, sorry for my poor Krita skills.
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I just made a thread asking for good logic books. What are you using to learn logic?
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That's actually really cool OP! The problem you run into is the computing power necessary to properly map any relationships that aren't trivial.
If you find a solution, email it to me and I'll claim the million dollar P=NP proof prize on your behalf.
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I am teaching a graph theory class, and we were proving some theorem that states that several statements are equivalent. I made a point to explain that we could view each statement as a node, and each time we prove some statement implies another we would draw a directed edge, and we are done proving the theorem once the directed graph is strongly connected.
I think only one student had any idea what the fuck I was saying. Still worth it.
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can i get some expanding brain memes
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>>8808635
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I wasn't gunna reply to this bread but that last panel made me laugh