Results 1 to 2 of 2

Math Help - inverse and the domain...

  1. #1
    Junior Member
    Joined
    Aug 2008
    From
    England
    Posts
    40

    Talking inverse and the domain...

    i cant seem to get the inverse of this function. (oh and sorry if this is in the wrong place i didnt know where to put it)

    f(x)=1-2^x x E R

    ive got so far but i cant seem to finish it .... and how do you find the domain of this invserse (is it x E R)

    thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Jun 2009
    From
    Africa
    Posts
    641

    Smile

    hi.
    f(x)=1-2^{x}\Leftrightarrow y=1-2^{x}\Leftrightarrow x=1-2^{y}...then solve for y,and change it to f^{-1}(x).
    the domain of the inverse is equal to the range of f.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 4
    Last Post: April 2nd 2012, 09:17 AM
  2. Replies: 4
    Last Post: August 10th 2011, 05:24 AM
  3. Inverse function - domain
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: March 29th 2010, 12:06 AM
  4. domain of a 1-1 function and its inverse
    Posted in the Calculus Forum
    Replies: 4
    Last Post: March 6th 2010, 02:42 PM
  5. Inverse domain
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: May 16th 2008, 09:04 AM

Search Tags


/mathhelpforum @mathhelpforum