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Archived threads in /sci/ - Science & Math - 620. page

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Can a question be posed such that the answer cannot be replied to with "but why?"?
15 posts and 3 images submitted.
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>>8838419
But why?
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>>8838423
There is no answer to that question since there is no context. Editing for clarification

Does there exist a question with an answer such that the answer cannot be replied to with "but why?"?
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>>8838438
here's an answer: The proof is trivial and is left as an exercise for the reader.

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How do I find the function that has this as it's derivative (function that describes its instantaneous rate of change at a given x value)?
19 posts and 4 images submitted.
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>>8838331
Fundamental Theorem of Calculus?
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>>8838331
Integrate it you mong. Did you not pay any attention in class? This is like week 1 shit.
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>>8838335
That just tells you how many roots it has.

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>Self study
How do uni students who get 4.0s study? What are they doing that I'm not outside of class to get that A+ when it comes to studying from textbooks?
15 posts and 1 images submitted.
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doing the exercises
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>>8838312
Pretty much this, if you have access to the answers just drill them over and over until you can consistently get to said answers
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>>8838309
Read the textbook

Have 3 notebooks:

Verbose notes notebook: write down the main theorems and concepts, as well as steps for calculation processes, plus 2-3 example problems of different types

Succinct notes notebook: write down the main theorems and concepts again, anything you don't already know by heart

Problems notebook: do the example problems

Make sure to label all 3 notebooks consistently and accurately for each chapter, section, and page

>The US government got tricked into funding (2 Million dollars) to Solar Roadways
How are first world governments this fucking retarded?
https://www.youtube.com/watch?v=Yg64h2jrDVw

How can I trick the US or German Government into giving me money for free?
257 posts and 11 images submitted.
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>>8834511
>How can I trick the US or German Government into giving me money for free?

>he doesn't know about white mans welfare

get your buddies in the DoD or DoE to write off on your project and make sure to include them as """"project manager"""" for a sizable salary.
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Democrats borrowing against money of our great grandchildren to "create jobs" by giving money to cronies.
>>
>Government not willing to fund Fussion or Fission
>But willing to spend half a mil on this
We are doomed.

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>>8834047
fat jon snow
>>
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Question on numerical methods for differential equations:
Could someone explain what's going on here?

I assume we have [math] g(x) \approx _a g(a) + g ' (a) (x-a) + \frac{ g''(a) } { 2! } (x-a) + ... [/math]
With [math] g(x) = y'(x)[/math] and [math] a = t_{ n+2 } [/math] , but what's x here, is it h? And how do they get the right hand taylor series?

Also I read that just replacing y by a polynomial of degree p and check for which p (1) is exact would also work to find the order of consistency, but it's only exact for p=0 and p=1. Why?
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>>8834047
Someone explain the asscrack man meme to me.

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Seriously, find a single guy in prison who would want to be known as the guy that snitched
20 posts and 4 images submitted.
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>>8840407
Just both remain silent, get small sentences because they can't really make anything stick and don't get murdered for snitching.
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>>8840407
That's why they're in prison.
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>>8840407
The snitch only stays in jail if both snitch and then they would be known as the guys who snitched on each other. It would become a prison-wide joke. Even the guards would laugh.

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what are the best steps to take for someone recovering from a concussion?
are all injuries to the brain permanent? and are there ways to help the brain become normal once again?
18 posts and 4 images submitted.
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install gentoo
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>>8839973
From what little I know, it depends heavily on what part of the brain is damaged

https://biau.org/about-brain-injuries/cognitive-skills-of-the-brain/

this link also list problems associated with brain damage per part
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>>8839973
Ask your doctor not memechan. I had 3 concussions, two of them in a 4 month interval. It fucked up my short term memory for a several weeks. Now my main problems are simply a slow reaction time, and maybe slighly more aggressive.

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>Go with a friend to his Introduction to applied sciences for Math Grad students
>groups of 3, prof gives each group pic related
>they all start talking about topology and other trivial math concepts
>not one group can light the lamp
35 posts and 5 images submitted.
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>>8839608
seems really hard to believe. I think you full of shit.
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>>8839616
I think you're a madfag
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>>8839618
you described a room full of guys and implied not one among them was able to light a bulb using the things in the picture.

it seems very hard to believe.

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The poll: http://www.strawpoll.me/12781917
>Please specify in the comments or thread.
31 posts and 3 images submitted.
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medical marijuana + coffee
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>>8839586
OP here, I turn Earl Grey into theorems.
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>>8839586
>>8839590
weed and this rooibos with bergamot which is

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There is no /psy/ board so I'm post here in hopes that someone with some knowledge in psychology will view it.

I am very vulnerable to all sorts of stimuli. Touching me makes me feel invaded, tickling me physically hurts. My hearing is very sensitive and I am very sensitive to light. I can only focus on one thing at a time. I never understood social ques or hints, like sarcasm. In elementary school I used to follow a person around and didn't understand that they didn't want me around at all because they were very not very direct about it, things like that happened a lot. I would've stopped being a creep if I knew. I've kept my distance ever since.
I tend to ramble on without realizing the other person in the conversation doesn't care, just to get every last detail down. So I've learned to shut up ever since.
I'm easily distracted and can only focus on things I'm very interested in. I memorize things again and again. I have obsessed over things to the point of printing out hundreds of photos of them just to admire them. I pace and I fidget and fiddle constantly, it takes up most of my day. I gag on certain textures of food. I used to use my forefeet to walk, I stopped though because it looks creepy. I have a lot of trouble understanding other peoples motives and views for things, and can't really empathize with them. But when I DO empathize I get very very sucked into that role, I think I relate to characters and people to much and start worrying about what I'd do then.

1/2
32 posts and 5 images submitted.
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And due to these things and some others I suspected I had Aspergers. I have read a lot about it and it matches me well.
Besides that, I've always had suicidal and homicidal thoughts, they are only getting worse over time. I don't have a real motivation for anything at this point. I am convinced that whatever I do will ultimately result in failure, and I think this way for good reason: It always has.
I'm under constant stress due to the chaos of this household (and this world in general) I've always lived in, too many people shouting and walking around and I can't get my mind off of it. I will never succeed in this world, I don't think people want me to. I am very scared in general. There are other things. I don't feel alright. I am very scared.

I recently started seeing a therapist, about two months ago. In our last session I asked what he thought was wrong with me and he decided that I had no issues besides probably depression. I didn't think that way, I told him I was very worried there was more than that (I didn't say I KNEW THAT, I only said I suspected it was more) and he just shrugged it off.
"Yeah, I think you've been reading way too much online"
I've been thinking about that statement again and again since then. I'm honestly believing it now. There could be nothing wrong with me and I'm just really stupid and have no excuse to be this much of a failure. I think that is the case.

Is there something wrong with me? And is therapy a meme? Also, does 4chan need a /psy/ board?
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>>8839415
Therapy can work, but finding a good therapist is difficult. Ideally find someone with a research oriented PhD or at least a PsyD.

It's highly unlikely (though possible) that a masters in counseling therapist is competent.
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>>8839415
>Is there something wrong with me?
to answer that question I need more information.

How old are you?
Did you complete highschool? College?
Do you have a job?
What is the longest you have ever kept a job?
What is the longest relationship you have ever had with a person of the opposite sex who isn't a member of your family?

In spite of your own perceived flaws about yourself that is not as important as your ability to function in society.

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Probably one of the most interesting topics to research on out there.
There are many methods to create carbon nanotubes,
however chemical vapor disposition seems to be the best one to me.
I've read many articles and watched plenty of videos but there is one thing I can't wrap my head around .
How does the catalyst force the carbon to form tubes instead of graphite layers?
Is there actually a proper explanation for it or it it just known due to experiments?

Also, when do you think we will be able to build the space-lift?
18 posts and 1 images submitted.
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>spacelift
>>>/x/
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>>8839112
It's people like you, who believed men would never be able to fly.
A space-lift will be possible at some point, the question is, if it will be profitable.
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>>8839106
CVD isn't scalable to mass production. We need a better manufacturing process.

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How do you deal with occupying the precarious middle ground being a brainlet and being curious about things brainlets don't care about?

I'm basically a brainlet that can barely comprehend stuff beyond a community college level but i never had that child like curiosity beaten out of me. All my friends are brainlets too but they consider me the genius of the group for grasping basic concepts in physics and math.
13 posts and 3 images submitted.
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You start by studying 2 hours a day.
Hard work It the only way, even if you're a genius.

Or you could just keep masturbating to popsci and delude yourself you're learning.
>>
What do you mean by "how do you deal with it"? What could you possibly be doing wrong?
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Just work on your deficiencies. You just aren't "WOKE" yet. You have the child-like curiosity; that is simply all it is...Child-like...A child-like curiosity is just a passing emotion.

Now you just need to become PASSIONATE. Find a goal and make it your life's work.

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Keep it quality
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[math] \text{What are} a \text{and} b \text{?} [/math]
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>>8838874
That's not how you round you dumb fuck. [eqn] \pi \approx 3.14 \\ \Phi \approx 1.62 \\ 2\pi + \left ( \Phi \pi \right ) ^3 \approx 137.904 = 138 [/eqn]
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>>8838874
They cancel out

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0.999... = -24(1+2+3...)

True or False?
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>>8838266
False
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>>8838286
please provide proof and reasoning, thank you
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>>8838266
Maybe

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Why would evolution make fingering your ass feel so good?

You'd expect it to not feel as good as it does if poop is not healthy.
17 posts and 3 images submitted.
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pooping is healthy
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>>8838081
but having poop on your fingers and insider your fingernails is not. is it?
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>>8838079
probably a coincidence desu. not everything is intentional

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