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# /sci/ - Science & Math

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File: 104 KB, 692x644, modern humans graph.jpg [View same] [iqdb] [saucenao] [google] [report]

Humans? more like COOMANS

 >> Anonymous Wed Aug 5 09:40:52 2020 No.11976799 >>11976795>Eurasia>a small peninsula of asia is somehow a continent
 >> Anonymous Wed Aug 5 09:41:57 2020 No.11976802 >>119767953>1>4>2>5

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Prove that every positive integer is the sum of at most 3 triangular numbers (proven by gauss :) don't cheat :) And don't feel bad if you can't get it, Gauss didn't prove this until he turned 6

 >> Anonymous Wed Aug 5 09:40:09 2020 No.11976796 >>11976784Let n be a positive integer. Assume n can be written as a sum of 4 triangular numbers.By a theorem of Gauss, this is a contradiction.Therefore every positive integer is a sum of at most 3 triangular numbers.This completes the proof.

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What is the median age for death by coronavirus? I can't seem to find the information anywhere. My guess would be between 80-85, but I want to be sure. Also median age seems like a better indicator of lethality than average age, right? But also more young people than old people contract the virus, so there are more chances for a younger person to die. But what is the median age?

 >> Anonymous Wed Aug 5 09:39:17 2020 No.11976792 Medians and averages are for brainlet faggots, get the fucking age distribution instead: https://www.cdc.gov/nchs/nvss/vsrr/covid_weekly/index.htm

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Why is autism more common in males than females?

 >> Anonymous Wed Aug 5 09:25:10 2020 No.11976747 >>11976734>why are boy more likely to be interested in things>why are women more likely to be interested in people
 >> Anonymous Wed Aug 5 09:43:14 2020 No.11976811 >>11976734Because it can't be diagnosed in females as easily leading to under-diagnosis since society treats women paternalistically. In women autism is not a drawback because it makes it so that they're perceived as extra cute instead of extra creepy.

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Is tobacco good for you?

 >> Anonymous Wed Aug 5 09:13:12 2020 No.11976703 no lol
 >> Anonymous Wed Aug 5 09:17:13 2020 No.11976713 actually it has some health benefits but not smoking it
 >> Anonymous Wed Aug 5 09:21:25 2020 No.11976731 no but nicotine can have some uses
 >> Anonymous Wed Aug 5 09:27:55 2020 No.11976758 >>11976699Tobacco smoke makes me feel so good that it's not even funny. I'm not even a smoker but I still love it.
 >> Anonymous Wed Aug 5 09:29:03 2020 No.11976762 >>11976699It obviously makes you hang out with the cool kids and shit on the nerds

File: 172 KB, 580x772, bald3.jpg [View same] [iqdb] [saucenao] [google] [report]

Let's get this old classic regoing, lads. Do you buck the stereotypical look of the traditional scientician?
Let's find out!

7 replies omitted. Click Reply to view.
 >> Anonymous Wed Aug 5 09:28:51 2020 No.11976761 File: 2.41 MB, 933x1352, 1579232175318.png [View same] [iqdb] [saucenao] [google] [report]
 >> Anonymous Wed Aug 5 09:29:56 2020 No.11976765 File: 82 KB, 1024x592, beef producer.jpg [View same] [iqdb] [saucenao] [google] [report]
 >> Anonymous Wed Aug 5 09:31:00 2020 No.11976770 File: 114 KB, 736x1094, 1580725555514.jpg [View same] [iqdb] [saucenao] [google] [report]
 >> Anonymous Wed Aug 5 09:32:07 2020 No.11976774 File: 218 KB, 534x900, 1587107847920.jpg [View same] [iqdb] [saucenao] [google] [report]
 >> Anonymous Wed Aug 5 09:33:24 2020 No.11976779 File: 531 KB, 1350x2000, 1579398796651.jpg [View same] [iqdb] [saucenao] [google] [report]

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I want to seriously devote myself to studying mathematics, since I'm currently in the last year of high school and I want to pass the entrance exam to a solid university so I can study CS. I have the list of the things that will be on the entrance exam, as well as the entrance exam from the last year. Tried looking for some textbooks but I feel overwhelmed. I want to study specifically to pass the entrance exam and a bit more. I don't want to dedicate too much of my time to some complicated things which I can't use.

Any help? Do you know of any good literature that I should use? How much is the high school knowledge I already have valuable?

 >> Anonymous Wed Aug 5 09:06:28 2020 No.11976688 I'm struggling with this as well. I think there's such a thing as practical mathematics motivated by financial gain, and that motivated by curiosity. I'm more naturally motivated by curiosity, which is as much as a luxury as it is a valuable asset.

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is it true that people taking SNRI are more resistant to covid?

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Don't cheat, show your method :) A 5-year-old Gauss solved this in kindergarten.

∑ from 1 to 100 x

3 replies omitted. Click Reply to view.
 >> Anonymous Wed Aug 5 09:11:22 2020 No.11976697   $S=1+2+ \cdots +n \\S=n+(n-1)+ \cdots +1 \\2S=1+n+2+(n-1)+ \cdots n+1=n(n+1) \\S=\frac{n}{2}(n+1)$
 >> Anonymous Wed Aug 5 09:12:37 2020 No.11976700 $S=1+2+ \cdots +n \\S=n+(n-1)+ \cdots +1 \\2S=1+n+2+(n-1)+ \cdots +n+1=n(n+1) \\S=\frac{n}{2}(n+1)$
 >> Anonymous Wed Aug 5 09:16:43 2020 No.11976710 File: 6 KB, 302x296, reatard.jpg [View same] [iqdb] [saucenao] [google] [report] >>11976667sum 1 to a where a is even : (a-0)+1 + (a-1)+2 + ... + ((a/2)+(a/2+1)) = (a/2)*(a/2+1)sum 1 to 100 : 100+1 + 101+2... + 50+51 = 101*50 = 5050
 >> Anonymous Wed Aug 5 09:18:41 2020 No.11976718 >>11976710not (a/2)*(a/2+1) but (a+1)*(a/2) fuck
 >> Anonymous Wed Aug 5 09:20:04 2020 No.11976725 >>11976718great, now prove that every positive integer is the sum of at most 3 triangular numbers (proven by gauss :) don't cheat :)

File: 403 KB, 1944x2592, 20200804_220853.jpg [View same] [iqdb] [saucenao] [google] [report]

>Yeah, I study astronomy. How'd you know?

File: 57 KB, 225x258, Turing.gif [View same] [iqdb] [saucenao] [google] [report]

https://en.wikipedia.org/wiki/Hemispherical_resonator_gyroscope

what can I do with one of these?

 >> Anonymous Wed Aug 5 08:24:11 2020 No.11976625

>yeah meng, everything is subjective, 2+2 could be 5 lmaooo
the same people:
>WTF WHY WON'T YOU EXCEPT THE SCIENTIFIC CONSENSUS

 >> Anonymous Wed Aug 5 08:28:04 2020 No.11976632 File: 165 KB, 800x820, sojarz i fucking love science.jpg [View same] [iqdb] [saucenao] [google] [report]
 >> Anonymous Wed Aug 5 09:32:54 2020 No.11976776   >>11976632Science "says" there is no such thing as gender and no such thing as IQ.Social """"Science"""" is not science
 >> Anonymous Wed Aug 5 09:37:53 2020 No.11976787 File: 481 KB, 800x820, 1593579946068.png [View same] [iqdb] [saucenao] [google] [report]
 >> Anonymous Wed Aug 5 09:42:37 2020 No.11976806 Are you still butthurt that someone disagreed with you on twitter?

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Partial differential equations or algebraic topology for someone with only 130 IQ?

3 replies omitted. Click Reply to view.
 >> Anonymous Wed Aug 5 08:42:31 2020 No.11976656 >>11976586wtf PDEs are far easier than Algebraic Topology. Engicucks are capable of grasping them for goodness' sake.
 >> Anonymous Wed Aug 5 08:44:29 2020 No.11976658 >>11976656O yeah? Solve a pde analytically that's not the wave or heat equation.
 >> Anonymous Wed Aug 5 08:46:19 2020 No.11976661
 >> Anonymous Wed Aug 5 08:48:07 2020 No.11976662 >>11976661That's what I thought
 >> Anonymous Wed Aug 5 09:12:58 2020 No.11976702 >>11976658how often are PDEs used in higher dimensional studies (string theory)

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scientifically, is there another way?

 >> Anonymous Wed Aug 5 07:53:11 2020 No.11976553 creative activity, like drawing or composing
 >> Anonymous Wed Aug 5 07:55:14 2020 No.11976560 Live a fulfilling routine that doesn't rely on whims or chemicals. If you are really in the gutter mentally then start with doing your laundry or something.
 >> Anonymous Wed Aug 5 07:57:27 2020 No.11976565 smoke weed jerk off and play vidya Trust me, I am an expert.
 >> Anonymous Wed Aug 5 08:02:05 2020 No.11976578 >>11976537Going for a jog every now and them might help. Physical activity is vital to sustained happiness. Sitting in your room all day like a lazy slob is going to make you depressed.
 >> Anonymous Wed Aug 5 08:03:22 2020 No.11976581 >>11976578this is true, plus sports can be fun. if you want the weed/jerkoff/vidya combo to hit extra hard working out does help.

File: 164 KB, 732x862, learning.png [View same] [iqdb] [saucenao] [google] [report]

Is this the best place to start studying?

File: 485 KB, 2400x1600, math-problem.jpg [View same] [iqdb] [saucenao] [google] [report]

I haven't done any significant maths since secondary school about 5 years ago when I was 15-16. Where do I start with it?

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I woke up in the middle of the night with half of my face and half of my arm numb, and had to rub on them for a bit until blood started pumping in. Did I just suffer a stroke, though? Because that was my immediate thought as it happened and I’m still frightened by the possible complications that might occur, if they haven’t already. There’s no brain fog, nor do I have any problem regarding clumsiness and what not.
But, is there a chance I actually suffered a stroke as well as permanent brain damage?
I’m really afraid of the possibility of the long-term injury aspect involved in it.

 >> Anonymous Wed Aug 5 07:47:48 2020 No.11976535 >>11976526So you slept on your face and arm and woke up with them feeling numb... hmmmmmmmmm
 >> Anonymous Wed Aug 5 07:51:20 2020 No.11976545 >>11976526You should definitely ask a Cantonese knitting board instead of a doctor, you're off to a good start.
 >> Anonymous Wed Aug 5 08:18:21 2020 No.11976614 >>11976526You're in this site.You're already brain damaged.

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Does IQ correlate with life expectancy well?
Does it also explain it?

 >> Anonymous Wed Aug 5 09:03:12 2020 No.11976680
 >> Anonymous Wed Aug 5 09:20:40 2020 No.11976728 >>11976512By definition, IQ is a measure of how intelligent a person is based on what the society sees as useful. So my opinion is that they get to live better lives in a society as long as they keep doing them favors. Society keeps them alive, and high IQs get to keep the society alive. Anyway that's just my opinion.

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>While asleep, I had an unusual experience. There was a red screen formed by flowing blood, as it were. I was observing it. Suddenly a hand began to write on the screen. I became all attention. That hand wrote a number of elliptic integrals. They stuck to my mind. As soon as I woke up, I committed them to writing.

 >> Anonymous Wed Aug 5 07:34:07 2020 No.11976504 File: 12 KB, 205x246, seethered.jpg [View same] [iqdb] [saucenao] [google] [report] MY CRIMSON LIQUID SO FRANTICALLY SPILLEDTHE RUBY FLUID OF LIFE UNLEASHEDRIPPLES ASCEND TO THE SURFACE OF MY EYESTHEIR RED PENS DRAWING AT RANDOM, AT WILLHEED - IT COMMANDS, HEED MY WILLBLEED - IT SAYS, BLEED YOU WILL

File: 22 KB, 330x499, cyberneticalphysics.jpg [View same] [iqdb] [saucenao] [google] [report]

Is this a meme?
How applicable is control theory in physics?

All I can find about this topic is written by two guys, a russian named A. L. Fradkov and a guy named John Bechhoefer.

2 replies omitted. Click Reply to view.
 >> Anonymous Wed Aug 5 08:10:43 2020 No.11976594 https://youtu.be/oBc_BHxw78sit's a meme, it's on yotube and wikipedia. Both unreliable sources.
 >> Anonymous Wed Aug 5 08:18:46 2020 No.11976615 >>11976448That's funny I was doing that in my engineering bachelors, I thought physics was superior to engineering?
 >> Anonymous Wed Aug 5 08:23:21 2020 No.11976620 >>11976516To apply control you need to be an engineer, chemical, mechanical, electrical or aeronautical, anything else is a poor imitation of the subject, you'll probably learn some undergraduate level shit and not understand the subject at all.
 >> Anonymous Wed Aug 5 08:45:06 2020 No.11976660 >>11976620The classes I plan to take are offered by the engineering department. There's nothing similar to control in the physics curriculum. Papers like these:https://www.sciencedirect.com/science/article/pii/S1474667017353880/pdf?md5=92eacfff5634355da4b468318cdda5b5&pid=1-s2.0-S1474667017353880-main.pdfhttps://www.google.com/url?sa=t&source=web&rct=j&url=http://citeseerx.ist.psu.edu/viewdoc/download%3Fdoi%3D10.1.1.124.7043%26rep%3Drep1%26type%3Dpdf&ved=2ahUKEwisgoPJiYTrAhVXHrkGHbBABbcQFjAWegQIBhAB&usg=AOvVaw1KN25HuE2cUcv9AVF8qfHR&cshid=1596631225196Made me question whether control is something that is applicable in the realm of physics. On the other hand, I can only find stuff written by those two authors >>11976421
 >> Anonymous Wed Aug 5 08:56:56 2020 No.11976671 >>11976421So some physical questions are questions of stability, I believe turbulence is one. So if you like fluids there's probably some physics there to discover because we know so little about turbulence. Aeroelastic flutter is another example of a stability problem the structures engineers do when designing a plane. For complicated structures there's definitely more physics to discover in that field. I once knew a guy who did his phd thesis on quantum control, I guess it's a thing.

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