Results 1 to 3 of 3

Math Help - Rearranging issue

  1. #1
    Member
    Joined
    Jun 2008
    Posts
    88

    Rearranging issue

    Like always, I swear I'm right, but I'm obviously not. I'm trying to find the inverse of the function given, by swapping y with x, and then rearranging to make y the subject again.
    But apparently I'm wrong. They don't have a negative on their 3, whereas I do. What am I doing wrong?

    Ps. Sorry about the mess. I'm pretty sure it's readable, but it turns out my scanner doesn't like it when I write on both sides of the page.
    Attached Thumbnails Attached Thumbnails Rearranging issue-inverse.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by Naur View Post
    Like always, I swear I'm right, but I'm obviously not. I'm trying to find the inverse of the function given, by swapping y with x, and then rearranging to make y the subject again.
    But apparently I'm wrong. They don't have a negative on their 3, whereas I do. What am I doing wrong?

    Ps. Sorry about the mess. I'm pretty sure it's readable, but it turns out my scanner doesn't like it when I write on both sides of the page.
    -\ln \left(\frac{x-8}{-3} \right) = - \ln \left( \frac{8-x}{3}\right) = \ln \left( \frac{3}{8-x}\right).
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member
    Joined
    Jun 2008
    Posts
    88
    I see. That's the step I didn't pick up on. Thanks.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Probability issue
    Posted in the Statistics Forum
    Replies: 8
    Last Post: January 3rd 2011, 02:01 PM
  2. TI - 89 TI issue
    Posted in the Calculators Forum
    Replies: 3
    Last Post: October 10th 2009, 09:45 PM
  3. Log Issue
    Posted in the Algebra Forum
    Replies: 2
    Last Post: June 11th 2009, 08:09 PM
  4. Perspective issue
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: June 4th 2008, 03:05 PM
  5. Probability Issue
    Posted in the Statistics Forum
    Replies: 1
    Last Post: April 2nd 2008, 05:18 PM

Search Tags


/mathhelpforum @mathhelpforum