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Integral Notation Question

  1. Mar 9, 2010 #1
    I saw this notation in a textbook but I'm a bit confused by it. What exactly does the 3 mean? Is it shorthand for a triple integral in spherical coordinates?

    [tex]\int{d^3 r}[/tex]

    Thanks in advance.
     
  2. jcsd
  3. Mar 9, 2010 #2

    mathman

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    Science Advisor

    It means a triple integral, not necessarily in any particular coordinate system.
     
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