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  1. #881
    Death by snoo snoo
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    This is why we're in a recession.

    PEMDAS has failed us.

  2. #882
    Relic Horn
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    Quetzalcoatl

    how the fuck could calculators vary that much wtf lmao

    they are arguing over that shit at /b/.. i have to add that calc pic

  3. #883
    Absolute Messenger of Promathia
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    This is why i hate math.

    It lies to us.

  4. #884
    If I screw up again Im gone forever.
    Secret Admin

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    Niggas you are dumb, it's 2.

  5. #885
    Relic Horn
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    Quetzalcoatl

    I learned Please Excuse My Dear Aunt Sally (PEMDAS) in school but I hear muthafuckas talkin about BEDMAS and i'm like wtf?

  6. #886
    Banned.

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    Brackets I guess?

    Bro Excuse My Dear Aunt Sally?

  7. #887
    Title: "HUBBLE GOTCHU!" (without the quotes, of course [and without "(without the quotes, of course)", of course], etc)
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    Quote Originally Posted by Seanr View Post
    how the fuck could calculators vary that much wtf lmao
    Because it's not clear whether or not the (9+3) belongs in the numerator or denominator. Most calculators and computers would not put that in the denominator without a second set of brackets around this and the 2, and thus would give 288. Nobody is wrong or right (unless they're saying something other than 2 or 288). The question is ambiguous. This isn't even about PEMDAS. Even with the correct order of operation, you can still get both answers depending on how you interpret the problem

  8. #888

    Has to do with the calculator using RPN

    http://en.wikipedia.org/wiki/Reverse_polish_notation

    Edit: Woozie got it.

  9. #889

  10. #890

    Quote Originally Posted by warc View Post
    This is why you use a TI89. It will show the equation as how it's worked out, so there's no confusion

  11. #891
    Banned.

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    Trollbane

    Quote Originally Posted by Alleya View Post
    Cmon. It's clearly an ether soaked rag.

    fair enough

    http://i52.tinypic.com/2uhbeko.jpg

    http://i51.tinypic.com/rae1k3.jpg

  12. #892
    Final Fantasy XI Music Devotee

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    Quote Originally Posted by Eliseos View Post
    Has to do with the calculator using RPN

    http://en.wikipedia.org/wiki/Reverse_polish_notation

    Edit: Woozie got it.
    It doesn't, there's no ambiguity in RPN input (it's up to the user how to resolve it). Besides, none of those calculators is likely to support RPN.

  13. #893
    Absolute Messenger of Promathia
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    Old?

    http://i693.photobucket.com/albums/v...2378993371.jpg

    I see a lot of these, This ones new to me.

  14. #894
    Fake Numbers
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  15. #895
    foopy
    Guest

    Quote Originally Posted by alexisamonster View Post
    can anyone help me find a comic i saw on here, i've looked all over the last thread and this but i can't find it

    troll face comic where he goes down on his girlfriend and she orgasms and its a huge squirt and she's like "(trollface) i'm a squirter" and then it shows him and he's like "me gusta" and hes got the gusta face on with a snorkel and goggles on.


    too lazy to dump today. i'll be back tomorrow.

  16. #896
    Sic itur ad astra
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    Quote Originally Posted by Woozie View Post
    Because it's not clear whether or not the (9+3) belongs in the numerator or denominator. Most calculators and computers would not put that in the denominator without a second set of brackets around this and the 2, and thus would give 288. Nobody is wrong or right (unless they're saying something other than 2 or 288). The question is ambiguous. This isn't even about PEMDAS. Even with the correct order of operation, you can still get both answers depending on how you interpret the problem
    In PEMDAS multiplication and division are considered the same rank. If you have multiple calculations of the same rank, you then decide priority by going left to right.

    So, the (9+3) is highest priority, so you then have 48/2x12. The division has higher priority over multiplication now because it is to the left, so you then have 24x12. The correct answer is 288.

  17. #897
    Salvage Bans
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    ^No. Because maths.

  18. #898
    An Efficient Consumption Bundle
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    Quote Originally Posted by Mellema View Post
    In PEMDAS multiplication and division are considered the same rank. If you have multiple calculations of the same rank, you then decide priority by going left to right.

    So, the (9+3) is highest priority, so you then have 48/2x12. The division has higher priority over multiplication now because it is to the left, so you then have 24x12. The correct answer is 288.
    See, this is the kind of thing you learn in elementary/secondary school but later on learn isn't that true. Woozie's explanation is bang on as the question itself is ambiguous using infix notation. Certainly to my knowledge, there's no "order of precedence" when reading an equation right to left or left to right, even with infix notation. Postfix or prefix notation solves that issue, but I gather those syntax systems are unknown outside of the fields computer science and mathematics.

    Using your explanation Mellema would make teaching order of operations to grade-schoolers much easier. Much like how you get taught in high school chemistry that an atom is made up of a nucleus with some electrons orbiting around it like planets to a star. It's only when you get to your first-year chem class do you learn that explanation was right 80 years ago (and "untrue" today), but is still taught that way for the sake of simplicity.

  19. #899
    Title: "HUBBLE GOTCHU!" (without the quotes, of course [and without "(without the quotes, of course)", of course], etc)
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    Quote Originally Posted by Mellema View Post
    In PEMDAS multiplication and division are considered the same rank. If you have multiple calculations of the same rank, you then decide priority by going left to right.

    So, the (9+3) is highest priority, so you then have 48/2x12. The division has higher priority over multiplication now because it is to the left, so you then have 24x12. The correct answer is 288.
    http://latex.codecogs.com/gif.latex?\frac{48}{2(9+3)}

    vs

    http://latex.codecogs.com/gif.latex?\frac{48}{2}(9+3)

    Like I said, it has nothing to do with PEMDAS and everything to do with how you interpret the equation. It's not clear which of those are meant in the original expression. Normally, people would put an extra parenthesis in the equation if they meant the first one (if, say, they're writing a computer code or something). But in handwritten math, the image posted is a legitimate way of writing both of the above expressions. Even when I'm helping people with math on these forums I'll often omit the second set of parenthesis because it's usually clear from context which of the above forms I'm using. But, in my calculator/matlab/fortran/etc, if I want the first expression, I have to put 48/(2(9+3)) or else it will assume the second.

  20. #900
    foopy
    Guest

    Quote Originally Posted by shidobu View Post
    Had to make it.
    lulz, made my day.

    Quote Originally Posted by Tekki View Post
    I was inspired by foopy today at work

    that's awesome, did anyone comment on it?






    if you click this spoiler, you are admitting you are a homosexual and love cocks:
    Spoiler: show
    fags.






























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