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Find the limit, of severable variables

  1. Jun 13, 2008 #1
    1. The problem statement, all variables and given/known data

    limit as (x,y)---->(0,0)
    x^3 +xy^2/(x^2 + y^2)




    3. The attempt at a solution

    i tried letting x = 0, and get zero, and i also let , y= 0 and got 0, and then i let y=x , and got , zero, how can i be sure sure this limit is zero? What do i do ?

    Thanks
     
  2. jcsd
  3. Jun 13, 2008 #2

    tiny-tim

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    Hi th3plan! :smile:

    You have noticed that this is x(x^2 +y^2)/(x^2 + y^2) ?
     
  4. Jun 13, 2008 #3
    ohh duhh, as always not being observent. Good catch, do you any sites that have practice problems similiar to this ?

    Thanks
     
  5. Jun 14, 2008 #4

    tiny-tim

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