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Mean and median

  1. Mar 9, 2010 #1
    1. The problem statement, all variables and given/known data

    P(r) = 1-(2r2+2r+1)e-2r

    i know that p(r) is just the derivative of P(r)

    to find the median i would just integrate from o to r and set that equal to .5
    but when you integrate youre just going back to P(r) from 0 to r

    so i get

    1-(2r2+2r+1)e-2r = .5

    how would i go about solving this since i have the r's inside the parentheses and then the e raised to the -2r?
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Mar 9, 2010 #2

    LCKurtz

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    You would solve it numerically.
     
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