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Partial derivatives need help

  1. Apr 6, 2009 #1
    1. The problem statement, all variables and given/known data
    w=x^2+y^2+z^2 and ysin(z)+zsinx=0

    find (delw/dely)xindpendent
    find (delw/dellz)zindependent

    2. Relevant equations

    3. The attempt at a solution
    For the first one I think I can use a chain rule where find (delw/dely)xindpendent= delw/delx*delx/dely + delw/dely*dely/dely + delw/delz*delz/dely
    I only know this from a book example so could you please explain how to solve these type problems and also how to find delx/dely??? Please!
  2. jcsd
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