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MathGroup Archive 2006

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Mathematica bugs?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg67301] Mathematica bugs?
  • From: "Yaroslav Bulatov" <yaroslavvb at gmail.com>
  • Date: Sat, 17 Jun 2006 04:36:17 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

When I run the following line
x = Pi/4; For[i = 0, i < 56, i += 1, x = 2*Abs[x - 1/2]]; N[x]
I get
3.

But x should always stay between 0 and 1, why do I get 3?

Also
x = Pi/4; For[i = 0, i < 50, i += 1, x = 2*Abs[x - 1/2]]; N[Log[x]]
gives me
Indeterminate

How can I get an indeterminate here?


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