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Linear algebra

  1. Sep 30, 2007 #1
    In a city there are four one-way streets that cross each other like this:


    The number of cars that pass every hour is shown.

    Show that x=(x1,x2,x3,x4) satisfies a system on the form


    I really have no clue what to to here.
  2. jcsd
  3. Sep 30, 2007 #2


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    There are cars coming in, and coming out of each direction. The difference (out - in) is the number of cars that take a turn into another segment. Similar to a Markov problem.
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