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Math Help - Probability density function.

  1. #1
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    Probability density function.

    f(x)=k/x; [1,5]

    Find the value of constant k so that the function is a probability density function on the indicated interval.

    After integrating I got kln5-kln1=1. Or k(1.6094)=1. Is this right? I was thinking the answer would be a lot "nicer" seeing as how it is a textbook question.
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  2. #2
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    Quote Originally Posted by jebckr View Post
    f(x)=k/x; [1,5]

    Find the value of constant k so that the function is a probability density function on the indicated interval.

    After integrating I got kln5-kln1=1. Or k(1.6094)=1. Is this right? I was thinking the answer would be a lot "nicer" seeing as how it is a textbook question.
    k = \frac{1}{\ln{5}}

    look any "nicer" ?
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  3. #3
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    Oh, haha I hate when I miss little things like that. Thanks so much.
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