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Thread: The Mathematics Thread

  1. #21
    See you in another life! Mugiwara_no_Ice's Avatar
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    Default Re: The Mathematics Thread

    Quote Originally Posted by m00n View Post
    I thinks PDEs are an invention of the devil. My 0,02$ on math.
    Quote Originally Posted by Nami View Post
    I hate math and I'm bad at it. I should stay away from this thread.
    Quote Originally Posted by Tijnn. View Post
    I dropped every form of maths two years ago.

    Fucking hate it.
    Whyyyyyy? Math is just pure logic, what's there to hate about it?

    I used to love math, when I was like a wizz in it without a lot of effort, but then I started engineering studies, it became too difficult and I grew out of love of math.

    Now I try to hype myself back into it. I plan to start some pure math studies next year, so I'm rehearsing.
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  2. #22

    Default Re: The Mathematics Thread

    *stabs ice with fork for comment*

    I needed a tutor just to pass highschool math. I dread ever needing those skills again. I forget EVERYTHING.

  3. #23
    Discovered Stowaway m00n's Avatar
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    Default Re: The Mathematics Thread

    Quote Originally Posted by Mugiwara_no_Ice View Post
    Whyyyyyy? Math is just pure logic, what's there to hate about it?

    I used to love math, when I was like a wizz in it without a lot of effort, but then I started engineering studies, it became too difficult and I grew out of love of math.
    You just gave the answer yourself
    Spoiler:



    and that's just a differantiation...

    Quote Originally Posted by RDrrn View Post
    I'm taking Advanced Mathematics (the subject name may vary in another country) now and as far as I'm concerned, I like it. Though not much calculus involved so far(loves calculus). Just complex number conversion from Rectangular to Polar to Exponential and all.. I'm expecting it to be much harder soon to the point that I'll hate it as much as I hate Engineering Mechanics.
    Engineering Mechanics as in Statics, Elastostatics and Kinetics? Or as in Fulid- and Thermodynamics? Cause the latter two are kinda hard, while I enjoyed the former three.
    Last edited by m00n; December 4th, 2010 at 08:13 AM.

  4. #24

    Default Re: The Mathematics Thread

    Quote Originally Posted by Gokuyuske View Post
    I actually took an entire class on graph theory (check out the history section for the Konigsberg problem). It's a very interesting branch of math and has nothing to do with calculus, analysis, differential equations or most of what people generally associate with mathematics. You might also be interested to know that the "super difficult" problems in Good Will Hunting are really just elementary problems in graph theory!
    It is quite interesting. Since I take Comp Sci, I've only looked at graph traversal algorithms (Kruskal, Dijkstra, Prim), though.

  5. #25

    Default Re: The Mathematics Thread

    I am not talented in Math but I can't deny how freaking important they are.

    They are one of the main reasons an economy can work. Consequently, peace in developed countries.

    Also our perception of the world, everything we touch and see. Our ipods, our computers, the way civilization is shaped.

    A world without math would be chaos.

  6. #26
    Voici La Chévre Wagomu's Avatar
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    Default Re: The Mathematics Thread

    Quote Originally Posted by m00n View Post
    You just gave the answer yourself

    and that's just a differantiation...
    That doesn't look too bad. just a bit tedious. Plus, I would assume that the a values are constants, but without any given information we can't really do anything about it.

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  7. #27
    Discovered Stowaway fedcom's Avatar
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    Default Re: The Mathematics Thread

    I'm taking Higher Level Math as part of the IB program in my school.

    I'm probably one of the worst students in my class, but hey, it is the hardest math course in my school. In fact, if I get a good grade in this course, I'll be able to completely skip first year uni math.

    Co-incidentally, we just had a lesson about De Moivre's theorem on Friday.
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  8. #28
    Indiscriminate Grappler Gokuyuske's Avatar
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    Default Re: The Mathematics Thread

    Quote Originally Posted by Chicken View Post
    It is quite interesting. Since I take Comp Sci, I've only looked at graph traversal algorithms (Kruskal, Dijkstra, Prim), though.
    A lot of graph theory is done with computers these days; mainly because it's so darn hard! While it is trivial to show if a graph is Eulerian (Koningsberg bridge problem), it is extremely difficult to show that a graph is Hamiltonian. So we have computers do it! They are also frequently used for colorings, planarity calculations, etc

    Other famous graph theory problems:
    -Knights Tour
    -4 Colors Theorem

    To people who say they hate math:
    As Ice has said, Math is just logic; it's pure thought and solving a problem is the power of the human mind triumphing over the mysterious universe we live in. I suspect that most people don't like it because of the way it is presented in schools and their emphasis on trigonometry, calculus and repeated problem solving. Taking a proof-based course (staring from the ground up and deriving everything) in almost any math subject is an enlightening experience.

  9. #29
    Discovered Stowaway m00n's Avatar
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    Default Re: The Mathematics Thread

    I had written an long text here. When I was done writing and read through it once more, I figured out it can be summarized in just one little sentence:
    I'm an engineer not a mathematician.
    Sorry to intrude on your thread.
    Last edited by m00n; December 4th, 2010 at 12:03 PM.

  10. #30
    Indiscriminate Grappler Gokuyuske's Avatar
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    Default Re: The Mathematics Thread

    Quote Originally Posted by m00n View Post
    As an engineer I don't care why the Stokes theorem is true and where is comes from. Using it to make the calculation of an energy flow over a surface easier is enough. Instead we get pages upon pages of derivation that 95% of us don't get at all.
    Understanding is one of the highest ideals we can aspire to, and abandoning it in favor of blindly plugging in numbers makes me sick.

  11. #31
    I like videogames TLC's Avatar
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    Default Re: The Mathematics Thread

    Quote Originally Posted by m00n View Post

    The as'? Yeah probably. Could stand for two different materials or something. I didn't make the picture and I don't know the wider context. V=Volume, P=Pressure, T=Temperature, v=specific Volume and n=molar mass, R is the universal gas constant. The point however is even this applicable stuff is getting so lengthy and little assessable that I find it hard to like. As for the really new and harder stuff that you did not learn at school, we did not need it a lot in other classes so far, and when we did, the professors in these subjects gave better explanations than the math professors. As an engineer I don't care why the Stokes theorem is true and where is comes from. Using it to make the calculation of an energy flow over a surface easier is enough. Instead we get pages upon pages of derivation that 95% of us don't get at all.
    It's really just showboating of what people did in the past to give the entire field a feeling of prestige. 90% of stuff you learn at university/college is useless anyway. You just go there to get your degree. Afterwards, you get taught the useful practical stuff when they train you at the career you chose.

    Quote Originally Posted by Gokuyuske View Post
    Understanding is one of the highest ideals we can aspire to, and abandoning it in favor of blindly plugging in numbers makes me sick.
    There you go with your naive idealism again.

  12. #32
    The Nice Guy Outerspec's Avatar
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    Default Re: The Mathematics Thread

    This forum needs more math.
    Everything's Eventual...


  13. #33
    Indiscriminate Grappler Gokuyuske's Avatar
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    Default Re: The Mathematics Thread

    Quote Originally Posted by Thousand Lion-san View Post
    There you go with your naive idealism again.
    The ignorance rests squarely in your camp once again, Lion-friend. I understand quite well that applying math to the real world is incredibly useful. I'm a physicist! My job is to apply mathematical theoretical/ideal models to the real world! However, I also understand that playing with weapons that you don't understand is stupid and dangerous. You'll just have to get used to the fact that (thank god) not everyone thinks like you do.

    Quote Originally Posted by Thousand Lion-san View Post
    It's really just showboating of what people did in the past to give the entire field a feeling of prestige. 90% of stuff you learn at university/college is useless anyway. You just go there to get your degree. Afterwards, you get taught the useful practical stuff when they train you at the career you chose.
    My god, this paragraph...

  14. #34
    Discovered Stowaway m00n's Avatar
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    Default Re: The Mathematics Thread

    Quote Originally Posted by Gokuyuske View Post
    Understanding is one of the highest ideals we can aspire to, and abandoning it in favor of blindly plugging in numbers makes me sick.
    And if we all go after our highest ideals we will be back in stone age within ten years. The world needs people that dig holes in the ground for construction just as much as it needs people who dig for understanding. Plowing the fields of the land is no less a task than plowing the fields of math. Try understand this.

  15. #35

    Default Re: The Mathematics Thread

    Just for fun.
    [youtube]6cAs1YBELmA[/youtube]

  16. #36
    Indiscriminate Grappler Gokuyuske's Avatar
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    Default Re: The Mathematics Thread

    Quote Originally Posted by m00n View Post

    And if we all go after our highest ideals we will be back in stone age within ten years. The world needs people that dig holes in the ground for construction just as much as it needs people who dig for understanding. Plowing the fields of the land is no less a task than plowing the fields of math. Try understand this.
    Oh, I do. But understanding Stoke's Theorem would take you maybe an hour, and I'm willing to risk that hour sending humanity plummeting into the stone age. I have absolutely no problem with applying math, I just didn't like that you were discounting the value of understanding it too.

    Anyway, I've got work to do, so let's just all agree that math is awesome :)
    Last edited by Gokuyuske; December 4th, 2010 at 12:20 PM.

  17. #37
    I like videogames TLC's Avatar
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    Default Re: The Mathematics Thread

    Quote Originally Posted by Gokuyuske View Post
    The ignorance rests squarely in your camp once again, Lion-friend. I understand quite well that applying math to the real world is incredibly useful. I'm a physicist! My job is to apply mathematical theoretical/ideal models to the real world!
    And I am a university student majoring in Biology and Chemistry. As such, I would have appreciated if someone cut out the computer programming, geography,history of science (twice they gave us this crap, two subjects that practically overlapped in the content) and marketing bullshit among other stuff that was clearly only put there to make our credits total 60.

    Quote Originally Posted by Gokuyuske View Post
    However, I also understand that playing with weapons that you don't understand is stupid and dangerous.
    Equating numbers to guns, lol.

    Quote Originally Posted by Gokuyuske View Post
    You'll just have to get used to the fact that (thank god) not everyone thinks like you do.
    Yeah, they're called the minority.

    Quote Originally Posted by Gokuyuske View Post
    My god, this paragraph...
    You can use hyperbole all you want, it's true. I'm a third year and I don't really remember anything I did these three years. And just to make sure there wasn't something wrong with me, everyone I asked about this said they were in the same boat. My best friend who's almost graduated (his course is one year less than mine) is the same. He has interest in teaching photochemistry and doesn't have a clue during lectures. However he's also working practically daily on his thesis involving the analysis of a compound via ultra-violet spectroscopy and he;s having no trouble there. People learn from practice and experience not numbers on a board.

    Edit: But if you wanna stop, that's fine too.

  18. #38
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    Default Re: The Mathematics Thread

    Quote Originally Posted by Aioria View Post
    Haha, you solved it pretty quickly. It was supposed to be a math puzzle!! Thanks for the explanation!!

    EDIT: Going back to the main topic, I only had to take up to Calculus 2 and that was almost 4 years ago so I don't remember much of it... Euler's formula?, Königsberg bridge problem?... those names just sound crazy.
    Well to be precise, it's a logic problem, or a logic mind-exercise if you will. Not a math problem. Mathematically nothing here needs to be solved. At least that is my view.

    EDIT: Also, the fox's answer was very good

    2nd EDIT: I recently read Simon Singhs book about Fermats equation and the epic (yes it really was quite epic) quest of finding a solution to it. I recommend it to anyone with any interest in math.
    Last edited by BartArt; December 4th, 2010 at 03:49 PM.

  19. #39
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    Default Re: The Mathematics Thread

    Alright, I don't particularly mind math, and I suppose I'm good at it as I am in an honors class. But I'm too young to have had all the hard math you;ve been talking about. But, here's a problem for you.

    Every month, a girl gets allowance. Assume last year she had no money, and kept it up to now. Then she spends 1/2 of her money on clothes, then 1/3 of the remaining money on games, and then 1/4 of the remaining money on toys. After she bought all of that, she had $7777 left. Assuming she only gets money by allowance, how much money does she earn every month?

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  20. #40
    Heart'n'Skull Nami's Avatar
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    Default Re: The Mathematics Thread

    Quote Originally Posted by Sky View Post
    Alright, I don't particularly mind math, and I suppose I'm good at it as I am in an honors class. But I'm too young to have had all the hard math you;ve been talking about. But, here's a problem for you.

    Every month, a girl gets allowance. Assume last year she had no money, and kept it up to now. Then she spends 1/2 of her money on clothes, then 1/3 of the remaining money on games, and then 1/4 of the remaining money on toys. After she bought all of that, she had $7777 left. Assuming she only gets money by allowance, how much money does she earn every month?
    I know it! too much.

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