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Homework Help: Discrete systems possible mistake in answers

  1. Aug 5, 2008 #1
    starting with the iterated map derived in the notes for calculating rootp(p>0)

    Xn+1=1/2(Xn+(p)/(Xn)

    calculate root 7 starting with x0=1

    so ok starting with that i get x0=1 x1=4 and then something strange happens the sub in looks like this

    X2=1/2(4+2/4)=9/4

    i was under the assumption that this 2 would be a 7 as it is still the value of p?
     
  2. jcsd
  3. Aug 5, 2008 #2

    Dick

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    Yes, it's a typo. x2=23/8.
     
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