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/sci/ - Science & Math


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8944061 No.8944061 [Reply] [Original]

Today I learned what double integrals are and even though in class we only saw really trivial examples (planes) and basically just covered the limit definition, when I got home I got myself some practice problems and learned all the little tricks like changing the order of variable and subdividing the region being integrated over.

And I have to say, doing double integrals makes me feel really good about myself. It makes me feel really smart. I am not sure why it is, but if it is anything then it probably is drawing the double integral symbol, writing dA, and specifying the region of integration under the integral as a set, rather than as an interval. Also when I say the word compact I feel like a big man.

Compact. Compact. Consider this compact set. Consider this family of compact subsets. Consider consider consider. Let A be a partition. I want to fuck a double integral.

And just now I was doing retarded shit as always like jerking off and watching dumb 4chan simulator videos on youtube when suddenly I remembered how good it felt to do double integrals, so I looked for more problems and just did them. It legitimately felt good to do those integrals and now the feeling has stuck in me. I may just see myself in the couple of weeks doing double integrals at the park, at the bus, in my room, in the bathroom while taking a shit. Who knows. Double integrals may be the best concept in mathematics that has ever been invented and no one can deny this to me. And I have felt so good that I have come here to you to preach about the one true god of mathematics: double integrals. Have you done a double integral today? Have you thanked the gentle authors who created double integral problems for us to solve? Thank them or you will go to integral hell, where there are only single integral problems and where compact sets do not exist.

So comfy.

>> No.8944068
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8944068

>>8944061
Do you know that there are TRIPLE integrals out there?

>> No.8944071

>>8944068
I have heard of the false prophets and indeed they will come to me later this semester, but I will not praise them. For I have done plane geometry and space geometry, and plane geometry is much comfier than space geometry.

And what will triple integrals be anyway? 4 dimensional volume? HAH. Nonsense. Burn the believers of the false prophets.

>> No.8944075

>>8944061
This is honestly one of the things that makes me feel so cool and smart.

I would always look ahead in math. I would look to the end of the book, at whatever crazy looking symbols and language they were using. It seemed so advanced. And then once I finally learned it, I felt so smart. Finally being able to use those symbols, to write them in my own handwriting, and not just to write it but to know what it means and to be actually proving something about it. Like a real math guy.

>> No.8944077

>>8944071
>plane geometry is much comfier
>does projective geometry once
>kills hisself

>> No.8944082

>>8944061
>I want to fuck a double integral.
lost

>> No.8944106

>>8944082
There is nothing wrong with fucking who you love

>> No.8944116

>>8944061
Report back when you learn the joy of grad, divergence and curl.

>> No.8944127

>>8944116
Meaningless concepts. I shall get a PhD in Double Integrals

>> No.8944168

>>8944127
>not getting two PhDs in single integrals
brainlets when will they learn

>> No.8944324

Couple weeks into calculus 3 now, doing well, already past partial derivatives and beyond. Chain rule was a joke. Double integrals remain my specialty.

>> No.8944752
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8944752

>>8944061
This is one of the best post I've ever read on this sub.

>> No.8945756
File: 565 KB, 367x265, 1495803372147.gif [View same] [iqdb] [saucenao] [google]
8945756

>>8944061
Then one day you realize that the Rienmann integral is a baby toy for brainlet engineers.

You will realize the rules to switch integrals were all a LIE.

You will have to work for several years until you can grasp the intent of the all mighty Lebesgue integral.

You will probably fail, fail many times, but one day if you preservere you will be able to prove the Beppo-Levi theorem for infinity sums of measurable functions, and then maybe one day you will be able to prove the ALL MIGHTY FUBINI THEOREM.

After you grasp the power Fubini's Theorem, after you finally understand why you can switch the order of the integrals you will see back to your former brainlet self, fapping to double integrals and you will see it with pitty.

>> No.8945829

cap me my main brother
-cwru

>> No.8945832

>>8945756
oh boy i hate math fags going to kill myself i'm sure of it

>> No.8946920
File: 17 KB, 706x262, Cleo.png [View same] [iqdb] [saucenao] [google]
8946920

>>8944061
inb4 you become one of those "integrals for fun" autists

Here is your new home now: http://integralsandseries.prophpbb.com/

>> No.8946983

>>8946920
I don't understand, what does phi stand for?

>> No.8947050

>>8944061
I can't tell if this is ironic or sincere.

>> No.8947053

>>8946983
Phase. In this case, phase of roots of the integrand.

>> No.8947097

>>8947053
What is that?

>> No.8947104
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8947104

>>8944752
>sub

>> No.8947169

>>8947097
At this point, if you're not trolling, i'd refer you to the Zorich textbook, vol 1

>> No.8947414

Top lel

>> No.8947440
File: 20 KB, 512x512, Generalized Stokes Theorem T-shirts_LRG.jpg [View same] [iqdb] [saucenao] [google]
8947440

>>8944061
Learn Surface Integrals, Stokes Theorem & differential forms then come back.

If you are smart you can learn it in few weeks. Otherwise if you struggle with it you are a Brainlet.

>> No.8947452

>>8947440
I always hated figuring out the chain.