Results 1 to 2 of 2

Thread: Domain

  1. September 29th 2009, 12:44 PM #1
    katekate
    katekate is offline
    Newbie
    Joined
    Sep 2009
    Posts
    23

    Domain

    I'm having a lot of trouble with finding the domain of this question:

    sqrt(8x-4)/sqrt(x)

    I get [.5, inf), which I'm told is wrong.
    Follow Math Help Forum on Facebook and Google+
  2. September 29th 2009, 02:09 PM #2
    pickslides
    pickslides is offline
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,234
    Thanks
    26
    From the denominator it is clear that x\neq 0 or x \neq \mathbb{R}^-

    In the numerator 8x-4 > 0 giving x > \frac{1}{2}

    Your solution sounds good to me.
    Follow Math Help Forum on Facebook and Google+
« Need Help with 3 Limit Problems | Demand function »

Similar Math Help Forum Discussions

  1. Converting from the S domain to the Z domain
    Posted in the Advanced Applied Math Forum
    Replies: 2
    Last Post: February 24th 2011, 10:15 PM
  2. Domain
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: May 29th 2010, 12:20 AM
  3. [GRAPH] What are the domain and range of f -1? (domain) (range)
    Posted in the Pre-Calculus Forum
    Replies: 6
    Last Post: September 16th 2009, 06:25 AM
  4. Domain
    Posted in the Differential Geometry Forum
    Replies: 2
    Last Post: September 14th 2009, 04:53 PM
  5. Domain of (26x-42)/(x^2 -2x - 63) ?
    Posted in the Calculus Forum
    Replies: 2
    Last Post: September 4th 2009, 08:35 PM

Search Tags


/mathhelpforum @mathhelpforum