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Thread: Mathematics

  1. #1
    butts FailFTW's Avatar
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    Default Mathematics



    Here's my explanation. The calculator is supplied with a somewhat vague expression.

    The first calculator interprets it as a fraction, the second calculator interprets it sequentially.

    6÷2(1+2)

    First calculator
    What it sees
    6_____
    2(1+2)

    Evaluate 1+2 = 3
    Evaluate 2(3) = 6
    Evaluate 6/6 = 1

    Second calculator
    What it sees
    6 x (1+2)
    2

    Evaluate 1+2 = 3
    Evaluate 6/2 = 3
    Evaluate 3 x 3 = 9

    Also lol canadians and "BEMDAS". It's PEMDAS because it has better mnemonics, such as "People Expect More ****s And Sex" (thank you xkcd)

    Edit: had you punched in 6÷2*(1+2), the first calculator would have no trouble getting to the correct answer.
    Evaluate 1+2 = 3
    Evaluate 6/2 = 3
    Evaluate 3 x 3 = 9
    Last edited by FailFTW; 6th March 2012 at 11:23 AM.
    Butts.

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  2. #2
    Luck kaglover1's Avatar
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    Ok first WTH at your image.
    And second it's BEDMAS not "BEMDAS"

  3. #3
    butts FailFTW's Avatar
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    It's either way. Division and multiplication are on the same level. As is with addition and subtraction.

    BE, DM or MD, AS or SA.

    When you encounter two things on the same level side by side, you go left to right
    Butts.

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  4. #4

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    Quote Originally Posted by kaglover1 View Post
    Ok first WTH at your image.
    And second it's BEDMAS not "BEMDAS"
    *facepalm*

    it's actually bemdsa

    bolt202/veil225/feint200

  5. #5
    Luck kaglover1's Avatar
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    Stop ****ing up my mind, i'm set to go University this september so don't mess me up.. And oh wait that is a troll post

  6. #6
    butts FailFTW's Avatar
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    Quote Originally Posted by kaglover1 View Post
    Stop ****ing up my mind, i'm set to go University this september so don't mess me up.. And oh wait that is a troll post
    No it's not a troll post. BEMDSA is 100% valid as well.
    Butts.

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  7. #7
    Green Bean rasudoken's Avatar
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    We should have a Calculus thread. Then Kag will march right in and make a post about not understanding it.
    by Cryopon

  8. #8
    King of Heroes nanop44's Avatar
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    I could use a bit of help relearning volume of revolution
    噢如果超人会飞
    那就让我在空中停一停歇
    再次俯瞰这个世界
    会让我觉得好一些

    哦拯救地球好累
    虽然有些疲惫但我还是会
    不要问我哭过了没
    因为超人不能有眼泪

  9. #9
    butts FailFTW's Avatar
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    Volume of revolutions was the topic I understood the most, probably because I'm a CAD pro.
    Basically the radius of your circle is a function of whatever the given function is
    The volume would simply be pi*int_lowerbound^upperbound (f(x)^2) dx

    int_lowerbound^upperbound is computer text for an integral from lowerbound to upperbound. It's what you'd type into Wolfram.

    Protip: if your function is even (like x^2 or anything symmetric about the y-axis) you can do 2pi int_0^upperbound (f(x)^2) dx to make life easier.
    Last edited by FailFTW; 6th March 2012 at 12:44 PM.
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  10. #10
    Beginner OneSevenNine's Avatar
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    Quote Originally Posted by rasudoken View Post
    We should have a Calculus thread. Then Kag will march right in and make a post about not understanding it.
    let's make a thread titled "are you kaglover" and then i will post in it "i am not kaglover"

    Click the above free music i am so artist
    Spoiler!

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