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Archived threads in /sci/ - Science & Math - 124. page
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What's the easiest course to get into R&D? I'm curious. Like i mean in high demand in R&D sector
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>R&D sector

That doesn't mean anything
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>>7775994
nope. it means research and destruction
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>>7775980
Are you retarded?

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If you're all so smart, tell me how well these two courses will prepare me for any STEM field, particularly some form of plebgeneering, like civil/mech.

Number 1
http://www.open.ac.uk/courses/modules/mst124

Functions
Trigonometry
Vectors
Calculus
Matrices
Sequences
Complex numbers

Number 2
http://www.open.ac.uk/courses/modules/mst125

Number theory
Conics
Geometric transformations
Mathematical language and proof
Further calculus
Differential equations
Mechanics
Eigenvalues and eigenvectors
Combinatorics
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>>
>>7775977

try going to /adv/, I hear they're smarter.

You fucking mongoloid.
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>>7775981

/adv/ is filled with a bunch of random shit, like guys asking whether their GF cucked them.

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Hi /sci/. My prof presented this problem as part of our first week of homework. He wants us to solve it with substitution and integration by parts, but I don't think we can progress with substitution. Even if we take his suggestion for u to start with, it just derives into 1dx, which now leaves us with two dx's, one of which is under a root. Am I wrong, or does substitution just not work here?
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>>7775960
Do integration by parts first and see what happens.
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>>7775960
I don't think you understand substitution...
if u = x+1, you need to express du as a function of dx.
Here it's easy: du = dx
then you need to substitute the function of x in the integral with a new (and equivalent) function of u.

x^2sqrt(x+1)dx = (u-1)^2 sqrt(u) du
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>>7775960youI would substitute yourself for him when it comes fucking his wife and daughter

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Hello friends,

Is it appropriate to have a thread about Macro economics and discuss the mathemathical equations?

If so!

I suggest we try to get out of the liquidity trap.
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This is now a centrally planned economy thread
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>>7775920

a commie or socialist central planned one?
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>>7775909
I'm pretty sure this is what >>>/biz/ is for

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how and why does this work /sci/ ?
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Well concealed set of mirrors.
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hidden strings. even a 1 year old can figure it out
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Hand of God

it isnt viable these days on a moment that we can even create/ manipulate blackholes on labs and send bots to mars?
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why dont you create that lazy faggot
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>>7775904
The ozone layer is fine now that CFC's are banned
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>>7775996
>CFCs

What's this?

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Can I use pic related as background for my presentation?
My final bachelor exam is in a few days, about the development of a piece of software for a district heating company. Like to have a simple background for my power point and the quatom of solace boba fett seemed cool.

Or am I retarded? Other ideas?
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>>7775860
I have to leave right now so I won't have time to justify my comment but please take it as if this was god's answer:

*DON'T*

Sidenote: You are 'supposedly' a professional now, not a 15 year old kid.
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>>7775860
Use something more simple, that shit drags the attention when it shouldn't
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>>7775874
Welp, I'll find something different then, you're right.

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What does /sci/ uses for drawing block diagrams?
I'm polishing a paper and I don't like doing them with powerpoint (I run linux on my personal device and libre office is even worse)
I witness some dude doing them directly in latex but it's too time inefficient.
i also heard inkscape can do the job but i never tried and i'm afraid of the learning curve .
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I used Tgif. It is easy, is still being developed but has a lot of quirks.
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>>7775856I
Inkscape is a bit difficult, but you can easily get used to it in 20 minutes or so if you're only drawing blocks. Don't bother with the freetard tutorials, just play around with the tools.

IPE is a bit easier and works well for including equations/texts.

It does need to be vector graphics though, journals need to rescale your figures so you can't really use raster shit.

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Can someone please explain why the cross product of AxB= the area of the parallelogram?
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>>7775830
Because it's not a parallelogram.
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why wouldn't it be?
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>>7775830
Yes, someone can.

ITT: Childhood inspirations
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>>7775797
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Anyone can help me with dice?

So basically I want a dice-rolling program to give me the odds of rolling a particular number for any amount of any-sided dice

Obviously then I need to be able to calculate the number of possible permutations the dice can use to get any number, but I'm fucking stumped. I googled the problem and got this, but I simply don't understand the equation

I get that this is a "generating" equation, but how do I use it? What is the x variable used for? Do I set this equation equal to x^k, do I set it equal to anything?

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"hurrdurr Im retarded cs101 major"

asking the question "what is the probabilty i will get a 3" rolling 2 dices is equivalent to

chance of me getting
3 and 0
2 and 1
1 and 2
0 and 3
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>>7775759
What the fuck are you even saying? Dice don't have a 0 face, or at least none I've ever used.
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The total number of possibilities is 6^2 because permutations = variables ^ slots.

An easy way to remember this if it's something you have difficulty with is to imagine a 4 digit combination lock with 0-9 for each slot. You know there are 10,000 combinations because the highest number is 9,999 and the lowest is 0. 4^10 does not give 10,000, 10^4 does.

So you know there are 36 permutations, that acts as a checksum for the next method.

List all the possible results. 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12.

Now make a list of all the possible combinations...

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Earlier I was working on this question

"How many distinct anagrams are there of the word SLEEPLESSNESS?"

The answer is $\frac{13!}{2!4!5!} = 1081080$

since there are 13P13 (13!) possible permutations of 13 letters, and every one will have 4! repeats for reshuffling e's, of which each will have 5! repeats for reshuffling s's, and 2! repeats for l's, dividing through by this gives the answer.

However, how would you go about doing something like distinct three letter words? The first method works because every anagram...
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>>7775690
bump

the correct number for 1 letter words is of course 5, ths number of distinct letters in the word.

also for two letter words (23) i tried

$\frac{13P2}{2!2!2!}$ but it was 3 off when i tested it by writing out every distinct two letter word
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protip: just because you can put two letters together doesn't make it a word you stupid pn
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>>7775834
the point of the question is that any unique ordered triple counts as a word

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While we wait for >>7777777

What's /sci/'s opinion about neutrino research?
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>>7775673
cold
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>>7775673

David Bowie just died.
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>>7775684
WHAT THE ACTUAL FUCK NIGGER

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This paper will be published on arxiv tomorrow, for now it can be found here: http://vixra.org/abs/1601.0082.

Abstract:
High-order logic paper demonstrating that, in a metaphysical sense, marketplaces can be structured to achieve a form of artificial intelligence.
Devises a time-space-thought continuum framework and uses high level game theory and set theory to demonstrate that small changes in organizational structure result in transformations on the entire system. Further hypothesizes that this time-space-thought continuum exists in physical reality.
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>in a metaphysical sense
>achieve a form of artificial intelligence
>time-space-thought continuum framework
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Nice technobabbling m8

I'm sure tomorrow it will be up again for everyone who wants to read :^)
>>

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How do you remember chemistry jargon?

Cation - Cat
Anion - Anti
Nitrogen compounds - Azure (They usually start with an A e.g. Azide, Amides, Ammonia, Amines)

-ide - side
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>>7775632
OP - fag
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because I literally work with them 24/7 for a living
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>>7775647
how did you remember them during HS*

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