1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

When does g^(-1) f exist

  1. Apr 6, 2010 #1
    1. The problem statement, all variables and given/known data

    What is the condition for the function g^(-1)f to exist ?

    2. Relevant equations

    3. The attempt at a solution

    i know for function gf to exist , the range of f must be a subset or equal to the domain of g . Does it also work for g^(-1)f ? what is the logic behind that ?
  2. jcsd
  3. Apr 6, 2010 #2
    Re: fucntion

    Do you know which types of relationships are considered functions?
  4. Apr 6, 2010 #3
    Re: fucntion

    yes , one to one relationships or many to one for functions and one to one only for inverse function
  5. Apr 6, 2010 #4
    Re: fucntion

    Then there's your answer!
  6. Apr 6, 2010 #5
    Re: fucntion

    thanks ! How is it different when its fg^(-1) ?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook