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Homework Help: Probability density function

  1. Oct 17, 2013 #1

    I've dealt with integrals with infinity before. When considering the part x >= 1 , do I take the limit as if it's a very large number? i.e. ## \int_0^{\infty} x^{-2.5} \ dx = 2/3 ## ?
  2. jcsd
  3. Oct 17, 2013 #2


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    Yes, take the limit as the upper value goes to infinity.
  4. Oct 17, 2013 #3


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    You mean ##\int_1^\infty##. What you have written would diverge.
  5. Oct 17, 2013 #4
    ok thank you
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