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

Multivariable limit

  1. Oct 30, 2009 #1
    lim (x^2-4y^2)/(x+2y) as (x,y)->(-2,1)
    Does this limit go to -4 or DNE since it is undefined all along x+2y?
  2. jcsd
  3. Oct 31, 2009 #2


    User Avatar
    Science Advisor

    It Does Not Exist.
  4. Nov 1, 2009 #3


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Please note that you may write this as:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook