Results 1 to 3 of 3

Math Help - homework question Functions

  1. #1
    Junior Member
    Joined
    Oct 2008
    Posts
    26

    homework question Functions

    It asks to find the domain and range

    f(x) = 3x + 5
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member Greengoblin's Avatar
    Joined
    Feb 2008
    From
    UK
    Posts
    182
    Domain and range are both real numbers (or could be complex) giving f:\mathbb{R}\to\mathbb{R}

    You should recognise this as the equation of a straight line.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Oct 2008
    From
    Canada
    Posts
    1
    so....

    the domain is {x|x∈R}

    and the range is {y|y ≤ 3, y∈R} ?

    'cause I'm also having trouble with this.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Homework question help / inverse functions
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: September 21st 2011, 01:44 PM
  2. Replies: 1
    Last Post: August 17th 2010, 05:43 AM
  3. Need help with some trigonmetric functions homework.
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: August 30th 2009, 03:26 PM
  4. Functions--> homework , absolutly stuck :S
    Posted in the Math Topics Forum
    Replies: 7
    Last Post: April 11th 2008, 07:06 PM
  5. Combining Functions Homework Help
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: February 12th 2008, 06:41 PM

Search Tags


/mathhelpforum @mathhelpforum