Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Domain and Range of the functions

  1. Apr 15, 2006 #1
    Please can any body help me on this two functions it confuse me because has two and thee variables.

    Find the Domain and Range of each of the following functions


  2. jcsd
  3. Apr 16, 2006 #2
    a) x+y not equal to zero and (x-y/x+y)>=0, range should be all positive real

    b) i assume that is Ln[x^2+y^2+z^2] then the arguement cant be non-positive.

    These functions map to one demensional space, so the range should be clear and obvious. Domain is similar to R^1, like postive arguement under square root, divid by 0 etc.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Domain and Range of the functions
  1. Um, domains and ranges (Replies: 1)