Groups > comp.soft-sys.math.mathematica > #2859

Re: FixedPoint[Cos, 1.0]

From	Erik Max Francis <max@alcyone.com>
Newsgroups	comp.soft-sys.math.mathematica
Subject	Re: FixedPoint[Cos, 1.0]
Date	2011-06-01 08:32 +0000
Organization	Steven M. Christensen and Associates, Inc and MathTensor, Inc.
Message-ID	<is4tfn$b3a$1@smc.vnet.net> (permalink)
References	<is2kjq$qrm$1@smc.vnet.net>

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J Siehler wrote:
> My numerical analysis students this past term pointed out to me that
> the command
> 
> FixedPoint[Cos, 1.0]
> 
> which is the first example in the Information for FixedPoint doesn't
> ever finish running (or, not in any reasonable amount of time).  We
> tried this on serveral versions of Mathematica (6.x, 7.x, and 8.x),
> all on OS X, and got the same nonresult.

Works fine (and quickly) here (Linux 7.0.x for Linux):

In[1]:= FixedPoint[Cos, 1.0]

Out[1]= 0.739085

In[2]:= Timing[FixedPoint[Cos, 1.0]]

                    -18
Out[2]= {6.01732 10   , 0.739085}

-- 
Erik Max Francis && max@alcyone.com && http://www.alcyone.com/max/
  San Jose, CA, USA && 37 18 N 121 57 W && AIM/Y!M/Skype erikmaxfrancis
   Performing in front of a live audience is like a feeling of shock.
    -- Sade Adu

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Thread

FixedPoint[Cos, 1.0] J Siehler <jsiehler@gmail.com> - 2011-05-31 11:49 +0000
  Re: FixedPoint[Cos, 1.0] David Reiss <dbreiss@gmail.com> - 2011-06-01 08:30 +0000
  Re: FixedPoint[Cos, 1.0] Szabolcs Horvát <szhorvat@gmail.com> - 2011-06-01 08:30 +0000
  Re: FixedPoint[Cos, 1.0] Szabolcs Horvát <szhorvat@gmail.com> - 2011-06-01 08:30 +0000
  Re: FixedPoint[Cos, 1.0] "Dr. Wolfgang Hintze" <weh@snafu.de> - 2011-06-01 08:32 +0000
  Re: FixedPoint[Cos, 1.0] Erik Max Francis <max@alcyone.com> - 2011-06-01 08:32 +0000

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