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Math Help - Partial derivatives

  1. #1
    Junior Member
    Joined
    Nov 2006
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    48

    Partial derivatives



    I don't seem to understand the function here
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  2. #2
    Senior Member Peritus's Avatar
    Joined
    Nov 2007
    Posts
    397
    just use the chain rule:

    <br />
\begin{gathered}<br />
  f_x  = g_u u_x  + g_v v_x  + g_w w_x  \hfill \\<br />
  f_y  = g_u u_y  + g_v v_y  + g_w w_y  \hfill \\ <br />
\end{gathered} <br />
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