Results 1 to 2 of 2

Math Help - A fun math problem in a show.

  1. #1
    Newbie
    Joined
    Feb 2009
    Posts
    11

    A fun math problem in a show.

    Hey I was reading some comics and in the comics the protagonist tells someone to solve this equation if he wants him to do as he says.
    I was wondering if it's possible to solve or is it just a joke. I played around a bit by getting the ln integral and putting the result together again as a ln and writing it as e but not really getting anywhere.

    2x/a < integral of (1/t) dt upper boundary (a+x) lower boundary (a-x) < x(1/(a+x) + 1/(a-x))
    Last edited by Squared; June 16th 2014 at 12:28 PM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor ebaines's Avatar
    Joined
    Jun 2008
    From
    Illinois
    Posts
    1,040
    Thanks
    284

    Re: A fun math problem in a show.

    Not sure what youu mean by "solve this equation" - it's an inequality which is in fact true for the case 'a' and 'x' are both positive and x<a. It's not too hard to see - consider how the area under the curve 1/t from a-x to a+x can be approximated by either (1) the area of a rectangle centerd on t= a, with width 2x and height 1/a, or (2) the area of the rectangle using height equal to the average of the values for t= a-x and t=a+x, and width of 2x.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: September 19th 2011, 12:42 PM
  2. Replies: 0
    Last Post: May 29th 2011, 12:57 AM
  3. Have I done this 'show that' problem correctly?
    Posted in the Pre-Calculus Forum
    Replies: 5
    Last Post: July 10th 2010, 06:59 AM

Search Tags


/mathhelpforum @mathhelpforum