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Area of a surface of revolution around the x-axis

  1. Sep 22, 2009 #1
    Can the Surface area of a revolution be NEGATIVE? I am calculating this in parametric equations?

    finally I hope this is the right forum to ask this question.
     
  2. jcsd
  3. Sep 22, 2009 #2

    arildno

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    No, area can never be negative.
     
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