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Need help on listing different functions that have same range but different domains

  1. Aug 27, 2015 #1
    1. The problem statement, all variables and given/known data
    question: State two different functions that have same range but different domain. Then tell me what is the range of those two functions.

    The attempt at a solution
    Y = x/2
    Y= x/2 +1

    I don't know if that is correct or not. Any suggestion will help.
     
  2. jcsd
  3. Aug 27, 2015 #2

    BvU

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    Missing the relevant expressions! What is the domain of a function ?
    And what is the range ?
     
  4. Aug 27, 2015 #3
    Y = x/2
    Y= x/2 +1
    Domain will be all real?
    Range will be all real too?

    This is why I'm confused because they both have all real domain and range, but the question asked two different functions that have same range but different domain
     
  5. Aug 27, 2015 #4

    BvU

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    What you write is correct, so these two don't help for the exercise !

    Let me ask again:
    What (in words) is the domain of a function ?
    And what is the range of a function ?
     
  6. Aug 27, 2015 #5

    HallsofIvy

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    Why would that confuse you? You are saying the these functions both have the same domain so they do NOT satisfy the conditions!

    So what do you know about "functions", "domains", and "ranges"?

    For example, what are the domain and range for "y= 3x for 0< x< 2"?
     
  7. Aug 30, 2015 #6
    ok, I get it now. Thank you.
     
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