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Homework Help: Improper Integral

  1. Oct 8, 2013 #1
    1. The problem statement, all variables and given/known data
    It just wants me to tell whether this is improper or not.
    [0,infinity] e^(-x^3) dx

    2. Relevant equations

    I say Yes
    3. The attempt at a solution
  2. jcsd
  3. Oct 8, 2013 #2


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    I don't see why it would be improper. What's your reasoning?
  4. Oct 8, 2013 #3
    I'm not 100 percent sure. I said yes because I think it keeps going it's domain is all real.
  5. Oct 8, 2013 #4

    Ray Vickson

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    What definition of "improper integral" are you using?
  6. Oct 8, 2013 #5


    Staff: Mentor

    I would call this integral --
    -- improper, because of the upper limit of integration.
  7. Oct 8, 2013 #6
    I'm just using the def in stewart calc. I think it is improper thanks.
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