Results 1 to 5 of 5

Math Help - range

  1. #1
    Junior Member
    Joined
    Sep 2009
    Posts
    40

    range

    I guess what would really help is if someone could define range for me.
    I thought range was all y cordinates, so for this graph:

    I guessed range was (-1, 2)
    but this answer is incorrect.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by md56 View Post
    I guess what would really help is if someone could define range for me.
    I thought range was all y cordinates, so for this graph:

    I guessed range was (-1, 2)
    but this answer is incorrect.
    The range is [-1, 2] (unless the y-coordinate of the minimum turning point is less than -1, in which case I don't see how you'd be expected to know what the value is). Square barckets include the endpoint, round brackets do not. The endpoints are included because they are labelled on the graph with a closed circle rather than an open circle.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Sep 2009
    Posts
    40
    I changed my parentheses to brackets and my answer was still incorrect.
    Algebra kills me.
    It really kills me.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by md56 View Post
    I changed my parentheses to brackets and my answer was still incorrect.
    Algebra kills me.
    It really kills me.
    I feel your pain (actually I don't but I thought I'd say that to make you feel better).

    For the given question and graph, [-1, 2] is the reasonable and correct answer. Unless you're meant to enter it as -1 \leq y \leq 2. I suggest you flag this question with your instructor for further clarification.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Junior Member
    Joined
    Sep 2009
    Posts
    40
    Algebra punches me in the face and stabs a dagger through my heart. It spits in my eyes and induces gastrointestinal distress.
    I have notified my instructor, thanks for looking.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Range of b
    Posted in the Calculus Forum
    Replies: 4
    Last Post: June 18th 2011, 09:26 AM
  2. range
    Posted in the Calculus Forum
    Replies: 2
    Last Post: June 10th 2011, 11:06 AM
  3. range
    Posted in the Advanced Statistics Forum
    Replies: 4
    Last Post: March 27th 2010, 06:46 AM
  4. Replies: 6
    Last Post: September 16th 2009, 07:25 AM
  5. range, inter-quartile range
    Posted in the Statistics Forum
    Replies: 1
    Last Post: June 19th 2006, 06:06 AM

Search Tags


/mathhelpforum @mathhelpforum