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Re: Ha! a document that FAILS because it is in notebook

  • To: mathgroup at smc.vnet.net
  • Subject: [mg106954] Re: [mg106919] Ha! a document that FAILS because it is in notebook
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Fri, 29 Jan 2010 07:47:45 -0500 (EST)
  • References: <201001280744.CAA23579@smc.vnet.net>
  • Reply-to: drmajorbob at yahoo.com

I get this, four times:

Sin[10.^50]

0.92455

and also:

Sin[N[10.^50, 100]]

0.92455

but

N[Sin@(10^50), 100]

-0.7896724934293100827102895399174077539600834046214027191457808736221\
899969800609898633436757589688470

It's best to avoid those machine-precision numbers, it seems.

Bobby

On Thu, 28 Jan 2010 01:44:26 -0600, Richard Fateman  
<fateman at cs.berkeley.edu> wrote:

> In your Mathematica documentation reader, look for
>
> tutorial/WhyYouDoNotUsuallyNeedToKnowAboutInternals
>
> and scroll down to In[9] ...
>
> and notice that the example fails because it is in notebook form.  :)
>
>
> I was inspired to write out a more detailed commentary on this document,
> which you can see at
>
> http://www.cs.berkeley.edu/~fateman/papers/MmaInternalsResponse.pdf
>
> no notebook reader required.
>


-- 
DrMajorBob at yahoo.com


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