1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Help with Inverse Images

  1. Sep 9, 2008 #1
    http://answerboard.cramster.com/other-topic-5-311900-0.aspx" [Broken]

    I need help getting some ideas for an example of a function.
    Any help, ideas, suggestions, and/or tips are greatly appreciated.
    Thanks for looking at this question!
     
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Sep 9, 2008 #2

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    You are sort of muddling up domain and range. If f:A->B then H must be a subset of the range B, right? And if b is an element of B such that there is no a such that f(a)=b you are defining f^(-1)({b})={} (the empty set). Also correct? Then just consider any function that isn't onto. Any one. You pick.
     
  4. Sep 10, 2008 #3
    thank you

    thanks for the help!
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Help with Inverse Images
Loading...