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How do i find the lim of this series

  1. Apr 8, 2009 #1
    i am given

    Lim
    n->∞ [nqn], q is not given

    the answer is apparently 0, but i cannot see how to get to that,

    surely this is dependant on the value of q?? if |q|<1 --> q=0
    but if q>1--> q=∞

    where am i misunderstanding this?? does q stand for something here??
     
  2. jcsd
  3. Apr 8, 2009 #2

    Gib Z

    User Avatar
    Homework Helper

    You are correct, so perhaps it was part of a bigger problem where |q| < 1 is already implied?
     
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