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>tfw I took 20 mins to get my head around pic related.

Anyone else low IQ high interest here? Post feels.

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>>7711952

Post feels relevant to having a low IQ but high interest.

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So R is the set with the elements x that are not in x. But x = x, so the elements x that are not in x is nothing, which would mean R is the empty set. What's wrong with this reasoning?

What the hell is "real analysis" and "calculus"? In my country, we have "mathematical analysis I-III" courses, where we deal with differential and integral calculus (single and multivariable), metric spaces, infinite series and basics of vector analysis and ODE (not in this order). From the beginning everything is done in a rigorous manner with proofs. My assumption is that "calculus" is just analysis without proofs and "real analysis" = enter epsilon-delta. Am I Correct ?

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>>7711942

The courses you described are calculus courses, not analysis.

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>>7711942

Where are you form?

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>>7711942

Ayyyyy lmao Real Analysis is stuff with sequences, limits, compactness, limsup/liminf, series and all that jazz. Sorry I'm drunk I can't really explain it that well, but basically real analysis is harder than your usual stuff breh.

Anonymous

On the STEM meme. 2015-12-10 13:54:18 Post No.7711935

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On the STEM meme. 2015-12-10 13:54:18 Post No.7711935

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/sci/ you tell me that STEM is a meme and you can't get jobs.

So tell me this, /sci/, why aren't any of you becoming actuaries?

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>>7711935

Because it has math and math sucks cause MURICA & FREEDOM.

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>>7711935

because i want a job that wont make me suicidal by the age of 30

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>>7711935

what is an actuary

I'm trying to work through this exam problem, anyone know how to show that this mixture exists at vapor-liquid equilibrium? I assume I need to find a way t show that the fugacity of the vapor and liquid phases can be equal to each other at the given conditions but I'm not really sure how to start with all the information just thrown at me.

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>>7711880

Does this make sense?

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>>7712935

and this for b?

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>>7713024

Anyone know if I did these right/ know how to do this one?

WE FUSION NOW

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>>7711856

Not so hasty.

They're just proving that the plasma could be stable. And they apparantly did.

They're going to try again in januari, but with hydrogen.

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>>7711856

Source? I can't find any articles about this.

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>>7711891

>They're just proving that the plasma could be stable.

What's significant about that? The Brits did it year's ago, the problem you only get something like 0.65 the energy out that you put in.

How do i master Wolfram Mathematica in 3 days.

Note my programing skills are low tier.

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>>7711767

Install Gentoo

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>>7711770

its for an exam where its required to use mathematica.

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>>7711767

By learning Maple instead

anyone know where I could 'Classics in Total Synthesis III' from KC Nicolaou from? libgen has nothing

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bump

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p-plz

Do you guys have a large collection of textbooks like Gentoomen's Library?

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>>7711712

http://4chan-science.wikia.com/wiki//sci/_Wiki

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>>7711712

no, because i only have 3 texts that were worth keeping throughout undergrad

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>>7711712

Common core is right tho. Formally speaking 8+5 is (((((8+1)+1)+1)+1)+1) which is also equal to (((10+1)+1)+1).

Anonymous

Crystal Growing 2015-12-10 09:48:55 Post No.7711702

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Crystal Growing 2015-12-10 09:48:55 Post No.7711702

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I assume this belongs on /sci/...

Anyone here into growing your own crystals? I'm bored shitless and I want some to grow, any ideas? Prefereably some realitively simple ones, but NO copper sulfate ones, I fucking mean it.

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>>7711702

Try borax ones.

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>>7711704

Eh, may as well, but i'm looking for more...geometric ones, squares, hexagons, whatever

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>>7711702

Bump for interest, sounds like fun. I might want to do it aswell

When can I call myself a mathematician?

I'm almost done with my bachelors in math

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>>7711593

when you get your phd

in general, only phds are called scientist,physicist,mathematician, etc...

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When I hear the term, it means to me that you are working in the field or actively doing research. It's a description of what you do. Call yourself an artist if you do art. Call yourself a computer programmer if you program computers. Call yourself a mathematician if you do math.

Being a math student doesn't qualify in itself. There's a term for that.

I don't think you need to have a PhD or be a professor or anything like that. There are amateur mathematicians who make significant contributions.

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>>7711593

When you actually contribute something great to the field. Until then, you are just a hobbyist.

Anonymous

Square Matrices 2015-12-10 06:40:28 Post No.7711524

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Square Matrices 2015-12-10 06:40:28 Post No.7711524

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Anyone have any experience with putting a matrix through a linear equation? Drowning computer science major here. Googling extensively isn't getting me anywhere. Any help would be greatly appreciated! (:

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>>7711524

It's been a while but just input the matrix into the function and keep doing the operations until you have a final matrix.

It's tedious, but not difficult.

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>>7711526

Do you mean first taking the matrix ^3, minus the matrix multiplied by 3 and ^2, etc? Before I was just taking each number of the matrix and putting it through the equation.

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>>7711524

If the point of that exercise is finding nth powers of square matrices easily you should look up eigenvalues/vectors and diagonalization of matrices. Otherwise you can just do it the slow way, which in this case may be faster.

Im curious as to how good the math niggas on /sci/ are when they are handed an actual problem, since proofs these days can be regurgitated by anyone. Ill start off with pic related. If we substitute every circle with spheres, what is the total Volume of all the spheres? If you need an explanation behind the pattern of the circles, Its a dead ringer that you are not capable of solving said problem.

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>>7711485

the answer is:

Go away. You're a shit poster and this is a shit post.

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>not capable of solving

Name a better calculator.

Protip: You can't.

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ti nspire CX CAS

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>>7711381

Can it play DOOM?

>Not ripping and tearing during lectures

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>>7711381

ti89

Anonymous

Toothpick Bridge 2015-12-10 01:51:17 Post No.7711090

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Toothpick Bridge 2015-12-10 01:51:17 Post No.7711090

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Hi /sci/, so i have a project due tomarrow, i need to make a bridge out of toothpicks. It has to span 40 cm with room for a block of 14x9 cm to put weights on. All i can use is this glue and toothpicks. This is what I have so far. Any ideas anons?

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>>7711090

>tomarrow

see the problem with the toothpick bridge project is the glue needs time to dry. no matter how good your design is, the bridge will fail because of the not quite dry glue.

this means you do not have time to make an elegant design, like the girl who will win this year with a beautiful thin sloping style. you will have to make a design similar to this piece of shit this girl is holding, just a garbage amalgam of toothpicks and glue which will be destroyed immediately

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>>7711096

All the pieces in pic have been drying for 24+ hours

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Are you going for a design like this?

This is not a homework question, I just think I just fucked up my final.

How would I solve this for sigma?

I really thought the only way would be to use logarithms.

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>>7711077

You do, you use the natural log.

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>>7711080

That's really the only way to bring down an exponent like that then right?

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