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Can somebody explain me this?

  1. Sep 24, 2005 #1

    Kruger

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    I postet the formula below (attachment). I don't know how we can get from the first step to the second. I mean why does that n fall "out" of the square root?
     

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    Kruger, Sep 24, 2005
  2. jcsd
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  3. Sep 24, 2005 #2

    mathman

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    Step 1a, let v=u+n2, then lower limit of v is n2
    Step 1b, let u=v

    I presume w is independent of u.
     
    mathman, Sep 24, 2005
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