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Homework Help: Limit evaluation

  1. Feb 10, 2007 #1
    Evaluate the liit of (x^4+y^4)/((x^2+y^2)^(3/2)) when (x,y) approaches (0,0)

    I'm trying to replace x and y with rcost and ycost, but it seems too complex. How can I abbreviate the equation?

    I solved it myself...The limit is 0.
    Last edited: Feb 10, 2007
  2. jcsd
  3. Feb 10, 2007 #2
    No need to abbreviate, just analyse the r dependence,
    and check that the angular dependence is a has no singularity.

    And indeed you are right: 0 is the limit.
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