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Re: Chop in Mathematica 8.0.1

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  • Subject: [mg117533] Re: Chop in Mathematica 8.0.1
  • From: Syd Geraghty <sydgeraghty at me.com>
  • Date: Tue, 22 Mar 2011 05:05:57 -0500 (EST)

Hi Andrzeg,

In[1]:= 1.1 I

Out[1]= 0. + 1.1 I


In[2]:= 1.1 I // TraditionalForm

Out[2]//TraditionalForm= 0. +1.1 i


Cheers .... Syd

Syd Geraghty B.Sc, M.Sc.

sydgeraghty at mac.com

Mathematica 8.0 for Mac OS X x86 (64-bit) (February 23, 2011)
ReleaseID:    8.0.1.0 (2063982, 2063639)
MacOS X V 10.6.5 Snow Leopard 
MacBook Pro 2.33 GHz Intel Core 2 Duo  2GB RAM

On Mar 21, 2011, at 7:12 AM, Andrzej Kozlowski wrote:

> Hmm... perhaps this is not a bug but a deliberate new design?
> 
> Just evaluating
> 
> 1.1 I
> 
> returns
> 
> 0. +1.1
> 
> It seems a purely cosmetic issue but it does look a rather 
> "untraditional". Can anyone confirm that this is indeed an intentional 
> change?
> 
> Andrzej Kozlowski
> 
> 
> 
> On 20 Mar 2011, at 12:44, Andrzej Kozlowski wrote:
> 
>> Chop does not seem to work properly in Mathematica 8.0.1:
>> 
>> f[a_] := 2 I Pi Sin[a]/a
>> 
>> In[2]:= f[1.]
>> 
>> Out[2]= 0. + 5.287118128162912*I
>> 
>> In[3]:= Chop[%]
>> 
>> Out[3]= 0. + 5.287118128162912*I
>> 
>> This is with
>> 
>> In[4]:= $Version
>> 
>> Out[4]= 8.0 for Mac OS X x86 (64-bit) (February 23, 2011)
>> 
>> Mathematica 7.01 returns 5.287118128162912*I as expected.
>> 
>> Can anyone confirm it? At the moment I can't see any simple work 
> around...
>> 
>> Andrzej Kozlowski
> 


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