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Homework Help: Is it possible to this sequence?

  1. Dec 8, 2011 #1
    1. The problem statement, all variables and given/known data

    Vn+1=Vn*cos(pi/2^(n+2)) and Vn= pi/2

    2. Relevant equations

    Write Vn in terms of n

    3. The attempt at a solution

    how can i start this. I already know that -1<cosx<1 and i've already proved that this sequence is a negative sequence. Then our teacher said if its possible to write Vn in terms of n?
    Last edited: Dec 8, 2011
  2. jcsd
  3. Dec 8, 2011 #2
    Wrong attachement.

    Attached Files:

    Last edited: Dec 8, 2011
  4. Dec 8, 2011 #3
    correct attachment:
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