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!

Homework Help: Help with domain question with g(f(x))

  1. Sep 11, 2012 #1
    1. The problem statement, all variables and given/known data

    If f(x)=√x and g(x)=√(x^2+1) what is the domain of g(f(x))?


    3. The attempt at a solution

    I cam up with (-∞,+∞) since the square root of a square is always positive, am I missing something here?
     
  2. jcsd
  3. Sep 11, 2012 #2
    Nevermind, just saw it lol
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook