Anonymous
opinions on Khan Academy? 2017-05-03 10:46:34 Post No.8881926
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opinions on Khan Academy? 2017-05-03 10:46:34 Post No.8881926
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>suck at math
>thinking in going through all khan academy math
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do it faggot. You gotta start somewhere
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>>8881926
I used to suck at math too, but when I decided to self-study math and actually learn it this time, the high school algebra problem sets were a good refresher. Now I'm all the way up to topology and real analysis.
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>>8881926
It ain't bad but it shouldn't be the only way you study.
Anonymous
/sci/ approved online IQ test 2017-05-05 09:24:18 Post No.8885469
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/sci/ approved online IQ test 2017-05-05 09:24:18 Post No.8885469
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/sci/ approved online IQ test
Anonymous
2017-05-05 09:24:18
Post No. 8885469
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Surely there must be one.
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>>8885469
>Online
>Kek
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>>8885469
Learn Precalculus: IQ = 70
Learn Calculus: IQ = 75
Learn ODEs: IQ = 85
Learn PDEs: IQ = 95
Learn Analysis: IQ = 105
Learn Measure Theory: IQ = 120
Learn Functional Analysis: IQ = 135
Prove the Riemann Hypothesis: IQ = 160+
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>>8885481
Bullshit.I consistently score 130+ in all IQ tests yet suck at integral calculus
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>there are more molecules in a cup of water than cups of water in all the oceans
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>>8885252
There is more white in this brother,
then there are brothers among white folks.
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>>8885440
there are more bullets in his nigger than there are "nigger"s in his rap album
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Does this guy actually understand anything about what he "teaches"?
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Do your research and find out.
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Yes but not to the degree a PhD in a specific field might. He's more like a jack of all trades.
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>>8884545
I want to punch him so much when he makes this obviously triggering catch-face
good fucking dammit if I see one more thumbnail with his fugly face I'm gonna fly over there just to slap him in his visage personally
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So when the universe 'dies' and reaches thermodynamic equilibrium, what will be left? Is there some fundamental thing that all particles decay into once they've 'totally' decayed, or do they decay into like pure energy or something?
Would quantum randomness be a factor in whatever was 'left'? Like could super rare events lead to localized reductions in entropy, or would it just be an infinitely static universe?
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We don't know. Spacetime is not well understood (despite what asbergers believe), entropy is just an arbitrary concept without any experimental evidence, and so is time.
I would not count too much on bing bang, or heat death, to be the last word, as both are just mathematical extrapolations of currently accepted theories, wich are being disputed and modified all the time.
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>>8883960
If it reached thermodynamic equilibrium the stars will break down into the bare elements, planets would likely break down too, as their cores will stop spinning, the molten magma will be solidified, there may not even be light in the universe as it is essentially energy (radiation). The atoms cannot break down into pure energy since that will essentially break the idea of TDE. There will be eternal darkness full of pure neutrons (no positive/negative charge/energy). A monolithic cloud of neutrally charged particles floating around in an endless, energy-less void. Due to gravity (since in the bare concept it isn't a form of energy) all the neutrons/neutral particles may be condensed back into a single point in space. Considering this a TDE may be the cause of the primeval atom.
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>>8884389
I worded it terribly but I hope you get the concept.
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Is most published research wrong? How come we did not advance in a major way (except for smartphones) in the last ~15 years despite the flood in STEM?
pic semirelated
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Humanity is hitting the skill ceiling. Even geniuses are struggling with the advanced shit. When was the last time you heard some savant autist discover something on the scale of general relativity? AGI is LITERALLY the only thing we should be funding right now.
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>>8883922
>Is most published research wrong?
Yes, and no. The main problem is that there's not enough follow up experiments to prove the results are repeatable.
>How come we did not advance in a major way (except for smartphones) in the last ~15 years despite the flood in STEM?
There is very little left, in science to be discovered, that will actually affect us on a day-to-day basis. The biggest leaps in science in the past 15 years have been the advances to CRISPR. It has been around since the late 1980s in one form or another, but in the last 15 years so much has been advanced that can directly affect humans on a massive day-to-day scale. That's everything from food to health to building materials.
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Does this sound retarded?
Today we've got more freetime than ever.
Today we've got more mental illnesses than ever.
Usually one tends to question and ponder upon things more when not occupied by work etc.
Could thought be a process with both positive and negative consequences? Not saying that this would be a major factor in the case of mental illness, but maybe a contributor.
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>>8882499
degradation of social bonds and increasing isolation have resulted in greater amounts of mental illness. We're supposed to have intimate social groups of over a dozen people, and for a long time we did because we literally lived in groups with relatives. When individuals go out on their own, and are isolated, the chance for mental illness to "appear" increases drastically.
Mental illness is a result of modern living(isolation) and unhealthy amounts of stress mixed with inadequate stress management.
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There is also a lot of over-diagnosing happening these days. Interesting stuff to look up in your free time. This is just another factor to consider
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Anonymous
Do people have "rights" to reproduce? 2017-05-03 09:25:12 Post No.8881746
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Do people have "rights" to reproduce? 2017-05-03 09:25:12 Post No.8881746
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Do people have "rights" to reproduce?
Anonymous
2017-05-03 09:25:12
Post No. 8881746
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I'm not a /pol/kin and not racist at all, but hear me out. Every species who evolved on earth has gone through evolution via natural selection.
With the advent of modern science, especially the industrial and agricultural revolution homo sapiens population skyrocketed exponentially. The minimum bar of evolution through natural selection is to reproduce and pass on your gene. Arguably, this bar is too low nowadays, as even the poorest people in South Sudan or other poor parts of the world are able to make it past puberty and have kids.
As a result of this, human population has ballooned arguably above carrying capacity of the planet, causing environmental stresses such as climate change, overfishing, overhunting, etc.
What's wrong with non racist, non prejudiced merit based state/UN sanctioned eugenics program? For some of the more rare human race such as the Native Americans, we can even treat them as endangered humans and give them free pass on the eugenics certificate. If you think eugenics are bad, think of what we're doing right now. The living quality of people who are born in disease ravaged, war torn places like South Sudan, Liberia and Ivory Coast are so low and miserable. We keep allowing these people to be born into preventable miserable lives that is barely worth living, which is almost equivalent to torture, and have them die at the age of 40-50 (average life expectancy in those area) with very little chance of contributing to human advancement while also resource stressing their neighboring countries and the whole world in general.
Here's a fact. The next Einstein won't be born in Liberia. Even if a person with the same DNA and genetic makeup of Einstein was born in Liberia today, he won't make it anywhere due to the education and social mobility there is so poor.
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> not racist at all
Get out.
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>>8881759
I'm a big lefty. I'm pro environmentalism, science, expanding social safety net, more government funding toward science, and less military intervention overseas. I even support some aspect of social justice movement.
However, as I argued one cannot deny that if we allow someone to be born in warn torn poor countries and led a miserable life throughout, it is equivalent to allowing a child to be tortured.
Passing puberty and sticking your dick in someone is a pretty low bar, and if we want the whole species to continually improve and evolve we had to set the bar higher, otherwise we're doomed in this cycle of boom and bust where dumb people elect dumb leaders and make bad mistakes.
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>>8881769
> big lefty
Get out.
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try to defend GMO food.
you can't.
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I want decent tasting food and I want a lot of it.
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Your picture defends them pretty well IMO
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>>8881343
The chicken on the right looks plump and tasty.
HaHa! Cower before my superior intellect you feeble mortals, my power level exceeds that of 97% of the population! Now satiate my narcissism by posting your brainlet levels and tell me how hard math is.
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What are your accomplishments?
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>>8880594
>What are your accomplishments?
Do you really have to ask? It's obvious that the answer is "nothing".
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>>8880601
Can confirm
I cry all the time
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Whoa wtf! I love science now!
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download where?
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>>8878220
Are the original Japanese books available for download?
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>>8878235
LibGen has most of these, afaik
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Can Mealy Machine arcs/paths allow the same output trigger twice?
I got a vending machine circuit design that accepts 50c, a 1 dollar and 2 dollar coin.
Price of drink is 1.50
What happens if a 1 dollar, and then a 2 dollar coin is put in? The total is 3 dollars, and the 1.50 state is essentially the reset condition which can only be travelled to one, so how does this work?
Can I put a "2" after the slash? How does this work in binary logic?
I'm used to only using one true or false signal for each output cycle.
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This is a Burmese pattern-sewing forum why do you think we'll do your homework for you?
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You only have one sequential output signal per state. If you want to output multiple things in sequence, you need intermediate states.
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Sorry, OP here again.
I thought I could add extra states to allow for a 2.0 dollar coin always being added to the current highest state, but always results in a net 50c extra in the current total, always necessitating a higher state.
>add 50c to Z=1.5 in memory, go to Z=50c, output 1
>add 1.0 to Z=1.5 in memory, go to Z=1.0, output 1
>add 2.0 to Z=1.5 in memory, go to memory state Z=2.0, output 1
>add 50c to Z=2.0 in memory, go to Z=1.0, output 1
>add 1.0 to Z=2.0 in memory, go to Z=1.5 in memory, output 1
>add 2.0 to Z=2.0 in memory, go to Z=2.5 in memory, output 1
>add 50c to Z=2.5 in memory, go to Z=1.5 in memory, output 1
>add 1.0 to Z=2.5 in memory, go to Z=2.0 in memory, output 1
>add 2.0 to Z=2.5 in memory, to to Z=3.0 in memory, output 1...
Starting to see a pattern here where adding 2.0 to the highest state will forever require a higher state and a higher state
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Please help me understand this whole gender identity thing /sci/ I see people saying its mental illness, and pseudoscience with no evidence and some people saying its not and there is evidence, Im trying my best to determine fact from fiction but im not very science savvy, I tried looking up research online but after reading a few of the scholarly articles google returned, Im still pretty clueless.
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It's like when you are feeling stuck in a rut and get a new haircut or change your clothing style but instead of small adjustments you lop your cock off and complain about how people address you
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>>8885885
Science is moving from the "truth at all costs" phase of ruthless absolutism to something gentler and more humane, a science that cares about the truth, yes, but that is also willing to compromise to human nature, to create space for interpretation, and to provide a moral foundation for the next generation. What you are witnessing is the slow evolution of an autistic science to a multifaceted one.
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>>8885885
it's in fashion to use gender as a defining characteristic of identity
like emos or hippies before, you know? so people trying to be trendy will just make up genders and play with that
gender dysphoria though is real, transgender people do exist, but most people who claim to be nowadays aren't
Anonymous
Am i an idiot or is my friend an idiot ? 2017-05-05 12:43:27 Post No.8885699
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Am i an idiot or is my friend an idiot ? 2017-05-05 12:43:27 Post No.8885699
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Am i an idiot or is my friend an idiot ?
Anonymous
2017-05-05 12:43:27
Post No. 8885699
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I have a linear transformation T:R^n->R^n and some basis B for R^n ,and i know the representation matrix of T relative to basis B ,[T]_B.
if i want to find out the representation matrix for T with respect to the standard basis E={e_1,..,e_n} .So i'll just create the matrix
([T]_B*[e_1]_B ,...,[T]_B*[e_n]_B) and that will be the representation matrix of T relative to the standard basis am i right?
if not then what hell?
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To apply the transform T to a vector written in the standard basis you normally have to do three things:
>Rewrite the vector into base B
>Apply the T to the rewritten vector
>Transform the result back into base E
Those three operations can all be done with one matrix multiplication each so the composition of those three operations is just applying the product of those matrices.
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>>8885712
Yes that's what i meant by [T]_B*[e_i]_B ,i will convert e_i to the coordinates in base B then multiply it with the matrix [T]_B and ill have the i'th vector of the representation matrix of T with relative to base E.
is this what you also meant?
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>>8885699
Use LaTeX you dumbfuck.
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How would China's IQ scores compare if the effect of widespread endemic cheating was considered?
Worse or still better than Africa?
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>>8885628
Why do you think they are cheating?
Their PISA results are consistent with their high IQ.
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>>8885633
Fun fact, if you only counted White Americans in this chart, the U.S. would be close to the top.
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>>8885633
https://www.wsj.com/articles/foreign-students-seen-cheating-more-than-domestic-ones-1465140141
http://www.reuters.com/investigates/special-report/college-cheating-iowa/
https://www.theatlantic.com/education/archive/2016/03/how-sophisticated-test-scams-from-china-are-making-their-way-into-the-us/474474/
http://www.telegraph.co.uk/news/2016/06/09/china-uses-swat-teams-to-crack-down-on-college-exam-cheats/
https://www.youtube.com/watch?v=tpCJmE1z9eU