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Homework Help: P.D.E. help

  1. Jan 21, 2010 #1
    1. The problem statement, all variables and given/known data
    I will use d as a partial derivative symbol
    du/dt-du/dx=0 use a change of variables to solve
    3. The attempt at a solution
    v=ax+bt w=cx+dt so then I use the chain rule

    (du/dv)(dv/dx)+ (du/dv)(dv/dt)+(du/dw)(dw/dx)+(du/dw)(dw/dt)
    ok then you are supposed to plug it back into the original equation but this is where i am confused do i plug in the partials with respect to t and then subtract the partials with respect x , please don’t use latex my computer wont bring up the images its old .
  2. jcsd
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