Can somebody explain me this?

  • Thread starter Kruger
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  • #1
Kruger
214
0
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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Answers and Replies

  • #2
mathman
Science Advisor
8,084
550
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.
 

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