1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Finding The Divergence Of A Vector Field

  1. May 5, 2013 #1
    1. The problem statement, all variables and given/known data
    Find The Divergence Of The Vector Field:
    < ex2 -2xy, sin(y^2), 3yz-2x>

    2. Relevant equations
    I know that divergence is ∇ dot F.

    3. The attempt at a solution
    When I did it by hand I got
    2xex2 + 2ycos(y2) + 3y

    However wolfram alpha says it should be

    2xex2 + 2ycos(y^2) + y

    The difference is the last y. So who is right? This is for a divergence theorem problem, but I do not have an answer key.
  2. jcsd
  3. May 5, 2013 #2
    When you worked out the first term, you forgot to differentiate the -2xy.
    If you include this, your answer will agree with Wolfram.
  4. May 5, 2013 #3


    User Avatar
    Science Advisor
    Homework Helper

    Hi Baumer8993! :smile:

    - 2xy ? :wink:
  5. May 5, 2013 #4
    Oh wow, thank you for the help!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Discussions: Finding The Divergence Of A Vector Field