SOLUTION: the first example in a lecture of series is a^n=1/2^n can you write the recursion formula for this series? please help with this, thanks

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Question 70074: the first example in a lecture of series is a^n=1/2^n can you write the recursion formula for this series?
please help with this, thanks
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
the first example in a lecture of series is a^n=1/2^n
can you write the recursion formula for this series? 
please help with this, thanks

an+1 = ==(an) = 

          an
an+1 =   ————         
          2                  

Edwin
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