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Vector fields

  1. May 7, 2010 #1
    can someone please help me solve this problem?

    let C be a flow line for F(x,y) = -yi+xj, and let (x,y) be a point on C for which y is not 0.
    Show that the flow lines satisfy the differential equation
    dy/dx= -x/y.
  2. jcsd
  3. May 7, 2010 #2


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    Homework Helper

    Start with the fact that dx / F1 = dy / F2, where F = F1 i + F2 j.
  4. May 7, 2010 #3
    I really don't understand...
    can you explain the step more thoroughly??
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