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The Geniuses' Thread

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    #92
    Davidius
    Registered Users Posts: 4,893 ✭✭✭Davidius


    Don't need a solution so much as I need the question. The solution's something I figure I can work on my own. Which reminds me that I completely abandoned what I was doing, oh shít.

    I figure it's looking for 'distinct' solutions in the same way you find distinct solutions in linear congruences so I figure that'd be somewhere around the right idea. Not sure 3n/2 working considering x, y are integers hence n would need to be divisible by 2.


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    #93
    Pygmalion
    Closed Accounts Posts: 5,082 ✭✭✭Pygmalion


    Davidius wrote: »
    Not sure 3n/2 working considering x, y are integers hence n would need to be divisible by 2.

    Well yes, my answer was really "All integers that satisfy the following" rather than "all numbers that satisfy the following".

    I'm forgetting that you're doing maths though, so you can't just throw in an "if (n % p == 0)" and a loop to run until you find enough answers :P


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    #94
    BrokenHeels_Ox
    Closed Accounts Posts: 92 ✭✭BrokenHeels_Ox


    Pygmalion wrote: »
    I've had a few drinks and I'm not confident that I'm even close...

    But would 1/(n*3/2) + 1/(n*3) = 1/n?
    Multiply both sides by 3n and you get 2 + 1 = 3.
    Likewise 1/(n*6/5) + 1/(n*6) = 1/n since multiplying by n*6 gives 5+1=6
    1/(4*n/3) + 1/(4*n) = 1/n.

    Maybe like Y = N by a constant P; X is Y divided by P - 1?

    This won't give ALL the answer (I think), but it will (assuming I'm not wrong) give an infinite number of them.


    woah, u guys really are smart


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    #95
    Pygmalion
    Closed Accounts Posts: 5,082 ✭✭✭Pygmalion


    BrokenHeels_Ox wrote: »
    woah, u guys really are smart

    I like this one. Let's hope (s)he sticks around.


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    #96
    Konata
    Closed Accounts Posts: 6,164 ✭✭✭Konata


    BrokenHeels_Ox wrote: »
    woah, u guys really are smart

    Don't inflate their egos even more, we all know it's just a cover-up.


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    #97
    Pygmalion
    Closed Accounts Posts: 5,082 ✭✭✭Pygmalion


    Hotaru wrote: »
    Don't inflate their egos even more, we all know it's just a cover-up.

    I'll admit it, it was an alt account I made to compliment myself.


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    #98
    BrokenHeels_Ox
    Closed Accounts Posts: 92 ✭✭BrokenHeels_Ox


    Pygmalion wrote: »
    I like this one. Let's hope (s)he sticks around.


    she lol


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    #99
    Pygmalion
    Closed Accounts Posts: 5,082 ✭✭✭Pygmalion


    Right, so Maths question for you.

    You have a number N and a number P, you can add, subtract, multiply or divide.
    Is there an equation in N and P which will result in 0 if they're NOT equal, and any other integer (preferably a one for simplicity's sake) if they ARE equal (the other way around can be done with simple subtraction).
    You can introduce any constants you want and store any number of variables, but keeping it to a minimum would be good.
    Oh and you can't make any comparisons.


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    #100
    Arcade Panda
    Closed Accounts Posts: 1,426 ✭✭✭Arcade Panda


    world-maths-day-2010.jpg?w=329&h=320

    Happy maths day everybody!:D


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    #101
    Konata
    Closed Accounts Posts: 6,164 ✭✭✭Konata


    Anyone know of a good downloadable programme for creating scientific graphs?


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    #102
    almostnever
    Closed Accounts Posts: 3,768 ✭✭✭almostnever


    Geogebra, perhaps?:) Not sure if it's exactly what you're looking for but I find it handy. :)


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    #103
    Craguls
    Closed Accounts Posts: 1,986 ✭✭✭Craguls


    almostnever wrote: »
    Geogebra, perhaps?:) Not sure if it's exactly what you're looking for but I find it handy. :)

    Ooooh this looks much prettier than the graphing programme I used for calculus.(Which I'd recommend wholeheartedly except that it's awful)

    Thanks!


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    #104
    Konata
    Closed Accounts Posts: 6,164 ✭✭✭Konata


    almostnever wrote: »
    Geogebra, perhaps?:) Not sure if it's exactly what you're looking for but I find it handy. :)

    Hmmm, not quite but thanks anyway.

    I need one where you input the data for each axis and then they draw the curve/line for you. Used a programme in physics last year but can't remember what the hell it was called :/


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    #105
    SligoBrewer
    Registered Users Posts: 2,632 ✭✭✭SligoBrewer


    Hotaru wrote: »
    Hmmm, not quite but thanks anyway.

    I need one where you input the data for each axis and then they draw the curve/line for you. Used a programme in physics last year but can't remember what the hell it was called :/

    Excel?


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    #106
    Konata
    Closed Accounts Posts: 6,164 ✭✭✭Konata


    SligoBrewer wrote: »
    Excel?

    Forgot about Excel. Used some fancy complicated programme last year but Excel is probably easier.

    EDIT: Actually, no. How the hell do you make a graph on Excel? LC physics feels a long time ago...


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    #107
    SligoBrewer
    Registered Users Posts: 2,632 ✭✭✭SligoBrewer


    Hotaru wrote: »
    Forgot about Excel. Used some fancy complicated programme last year but Excel is probably easier.

    EDIT: Actually, no. How the hell do you make a graph on Excel? LC physics feels a long time ago...

    Numbers on x axis on one column, numbers on y axis in another.
    Open up a xy scatter from the insert menu.
    Input the data as relevant.
    Insert the relevant trendline into the graph.
    Do you need to do error bars/regression error?


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    #108
    Konata
    Closed Accounts Posts: 6,164 ✭✭✭Konata


    SligoBrewer wrote: »
    Numbers on x axis on one column, numbers on y axis in another.
    Open up a xy scatter from the insert menu.
    Input the data as relevant.
    Insert the relevent trendline into the graph.
    Do you need to do error bars/regression error?

    Thanks!

    No, it's only Pharmacology stuff so don't need error bars.


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    #109
    D4RK ONION
    Moderators Posts: 8,678 ✭✭✭D4RK ONION


    I don't get a lot of it, but I think ye will appreciate it more than me :)

    https://www.youtube.com/watch?v=BipvGD-LCjU


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    #110
    Pygmalion
    Closed Accounts Posts: 5,082 ✭✭✭Pygmalion


    Hotaru wrote: »
    Hmmm, not quite but thanks anyway.

    I need one where you input the data for each axis and then they draw the curve/line for you. Used a programme in physics last year but can't remember what the hell it was called :/

    Gnuplot?
    I remember using it once, it was fairly easy to control, basically you give it a text file and can basically say "Take the first column as X-axis and second as Y-axis", or "Just take column 4 as Y-axis and ignore the rest, assume X is linear" etc.

    Not sure if you'd have the data in right format for it, but AFAIk it's quite widely used and can handle a lot of things.


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    #111
    KnifeWRENCH
    Closed Accounts Posts: 11,148 ✭✭✭✭KnifeWRENCH


    Pygmalion wrote: »
    Gnuplot?

    You'll never comprehend the disappointment I felt when I clicked that link and discovered that it wasn't a program to plot gnus. :(


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    #112
    anonymous_joe
    Registered Users Posts: 9,255 ✭✭✭anonymous_joe


    Arcade Panda wrote: »
    world-maths-day-2010.jpg?w=329&h=320

    Happy maths day everybody!:D

    I just noticed my birthday is shared with World Maths Day.

    That's depressing.

    On a lighter note, I found some financial data from my old job that I really really shouldn't have floating around the darkest recesses of an old laptop's hard-drives along with various mathematical excel plugins relating to improving performance in video-games.

    The fact that I've ever had girlfriends amazes me sometimes. :pac:


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    #113
    suitcasepink
    Moderators, Education Moderators Posts: 7,837 Mod ✭✭✭✭suitcasepink


    Errem how would one go about ripping a dvd? Or like is it that drawn out and complicated a process I'd be best off not doing it?

    Cheers genuis' :)


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    #114
    Insect Overlord
    Moderators, Social & Fun Moderators, Society & Culture Moderators Posts: 30,857 Mod ✭✭✭✭Insect Overlord


    deise_girl wrote: »
    Errem how would one go about ripping a dvd? Or like is it that drawn out and complicated a process I'd be best off not doing it?

    Cheers genuis' :)

    If you have DVD ripping software on your PC/laptop/mac, then it should be very straight forward. Doesn't take too long either, but again that will depend on your particular computer.


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    #115
    suitcasepink
    Moderators, Education Moderators Posts: 7,837 Mod ✭✭✭✭suitcasepink


    Insect Overlord wrote: »
    If you have DVD ripping software on your PC/laptop/mac, then it should be very straight forward. Doesn't take too long either, but again that will depend on your particular computer.
    About the dvd ripping software, stuff comes up when you google, can any of those be used or am I best off buying a thing to do it?

    As you can see I have no idea what im doing.. :o


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    #116
    *giggles*
    Closed Accounts Posts: 930 ✭✭✭*giggles*


    I thought DVD's were protected from people ripping them? Maybe not. Did I hear correctly that one can rip a Blu-Ray DVD onto a PS3 and save it there?


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    #117
    Pygmalion
    Closed Accounts Posts: 5,082 ✭✭✭Pygmalion


    *giggles* wrote: »
    I thought DVD's were protected from people ripping them? Maybe not. Did I hear correctly that one can rip a Blu-Ray DVD onto a PS3 and save it there?

    That protection is so shoddy it can be countered by a badly written haiku.
    We will use these few
    internal variables:
    t1 through t6,

    unsigned integers.
    k, pointer to five unsigned
    bytes. i, integer.

    So here's how you do
    it: first, take the first byte of
    im -- that's byte zero;

    OR that byte with the
    number 0x100
    (hexadecimal --

    that's two hundred and
    fifty-six to you if you
    prefer decimal).

    Store the result in
    t1. Take byte one of im.
    Store it in t2.

    ... etc.

    :P


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    #118
    suitcasepink
    Moderators, Education Moderators Posts: 7,837 Mod ✭✭✭✭suitcasepink


    Pygmalion wrote: »
    That protection is so shoddy it can be countered by a badly written haiku.
    <snip>


    :P
    Soo pyggy...
    Do you know how to rip a dvd? :)
    Or even would you be able to explain to me how to rip it!? :pac:


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    #119
    Pygmalion
    Closed Accounts Posts: 5,082 ✭✭✭Pygmalion


    deise_girl wrote: »
    Soo pyggy...
    Do you know how to rip a dvd? :)
    Or even would you be able to explain to me how to rip it!? :pac:

    I've only ever used this.
    And it's not available on Windows as far as I know, so probably can't help, sorry.


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    #120
    D4RK ONION
    Moderators Posts: 8,678 ✭✭✭D4RK ONION


    Search google for DVD shrink then use some free software to burn it to a disk. Done.


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    #121
    Konata
    Closed Accounts Posts: 6,164 ✭✭✭Konata


    Moar computer problems - The current message at the top of my browser is 'The following plug-in has crashed: Shockwave Flash' Youtube videos are just showing up as black screens etc. First showed up when I went to play that Robot Unicorn Attack game this morning... any idea how I fix it?


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