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Homework Help: Cylindrical Co-ordinate Question

  1. May 22, 2012 #1
    1. The problem statement, all variables and given/known data
    In a text book it states:

    How do they conclude this?

    Thank you.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. May 22, 2012 #2


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    If |u| ≤ a, where a is positive, then -a ≤ u ≤ a .
  4. May 22, 2012 #3
    Thanks SammyS
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