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View Poll Results: how are you at math?

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  • I am NFP: talented

    14 15.91%
  • I am NFP: above average

    14 15.91%
  • I am NFP: average

    7 7.95%
  • I am NFP: below average

    2 2.27%
  • I am NFP: I suck at math

    12 13.64%
  • I am NFJ: talented

    10 11.36%
  • I am NFJ: above average

    15 17.05%
  • I am NFJ: average

    9 10.23%
  • I am NFJ: below average

    3 3.41%
  • I am NFJ: I suck at math!

    2 2.27%
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Results 71 to 80 of 83

  1. #71
    Senior Member GirlFromMars's Avatar
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    I seriously suck at Maths! It's always been my weakest subject. My strongest subjects were English, Drama, Child Studies.

  2. #72
    Senior Member LunaIndigo's Avatar
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    Oh God, I suck at math.

    But I'm great at Sudoku.
    ENFP 4w5

  3. #73
    Senior Member One Day's Avatar
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    I can learn certain math subjects quickly if I'm forced to learn it. Otherwise it's booooring. Not really my subject.

  4. #74
    jump sleuthiness's Avatar
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    I loved it, calculus included. English was my minor in college though.

    thinking of you

  5. #75

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    Aha, I found the problem, I think, that you mentioned on my visitor board.

    Quote Originally Posted by Chloee View Post

    prove that for ANY (real) positive numbers a,b,c and any not-negative number p this is true:


    Here is my solution:
    Any NFs Talented at Math?-chloee_problem-jpg
    Attached Images Attached Images

    Accept the past. Live for the present. Look forward to the future.
    Robot Fusion
    "As our island of knowledge grows, so does the shore of our ignorance." John Wheeler
    "[A] scientist looking at nonscientific problems is just as dumb as the next guy." Richard Feynman
    "[P]etabytes of [] data is not the same thing as understanding emergent mechanisms and structures." Jim Crutchfield

  6. #76
    Senior Member Chloe's Avatar
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    wow great!
    i will read it later, but I already see you did it the sa way i did - with grouping in beginning and then switching a*p,b*p,c*p, with b*p.
    but with this you prove it's only true in cases when a,b,c is bigger than 1 ?

  7. #77
    Senior Member LostInNerSpace's Avatar
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    ENFPs do have the capacity to do well with math. That's not going to transform me into one. When I think ENFP, I think dog. I like dogs. Wouldn't want to be one.

  8. #78

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    Quote Originally Posted by Chloee View Post
    wow great!
    i will read it later, but I already see you did it the sa way i did - with grouping in beginning and then switching a*p,b*p,c*p, with b*p.
    but with this you prove it's only true in cases when a,b,c is bigger than 1 ?
    I don't think the proof suffers from that limitation. I believe it works for all positive a,b,and c.

    The trick is to impose on order on a,b, and c without loss of generality. At that point, the inequality is true.

    After that using the fact that the sum of squares of real numbers has to be non-negative provides the rest of what is needed.

    Accept the past. Live for the present. Look forward to the future.
    Robot Fusion
    "As our island of knowledge grows, so does the shore of our ignorance." John Wheeler
    "[A] scientist looking at nonscientific problems is just as dumb as the next guy." Richard Feynman
    "[P]etabytes of [] data is not the same thing as understanding emergent mechanisms and structures." Jim Crutchfield

  9. #79
    Senior Member LunaIndigo's Avatar
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    Quote Originally Posted by ygolo View Post
    Aha, I found the problem, I think, that you mentioned on my visitor board.



    Here is my solution:
    Any NFs Talented at Math?-chloee_problem-jpg

    My brain just exploded...excuse me while I clean it up...
    ENFP 4w5

  10. #80
    Senior Member Chloe's Avatar
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    Quote Originally Posted by ygolo View Post
    I don't think the proof suffers from that limitation. I believe it works for all positive a,b,and c.

    The trick is to impose on order on a,b, and c without loss of generality. At that point, the inequality is true.

    After that using the fact that the sum of squares of real numbers has to be non-negative provides the rest of what is needed.
    yep, i read it now, it's true.
    that prove was 2003 in National competition in math here in Croatia for 1st year High School. i did it the same as you did until
    1 b*p[(a2 -bc) + (b2-ac) + (c2-ab)] >= 0
    then i've put
    2 (a-b)*2= a2-2ab+b2 >= 0
    3 (b-c)*2= b2-2bc+c2 >= 0
    4 (c-b)*2= c2-2bc+b2 >= 0
    since 2+3+4
    is (2a2-2bc)+(2b2-2ac)+(2c2-2ab)>=0 which makes 1 true, after you divide it with 2 etc.

    i like it because you dont have to have any real knowledge to do it, besides basic calculus. inequalities were always most interesting thing in math to me.

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