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MathGroup Archive 2007

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Re: Re: using N function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg76454] Re: [mg76395] Re: using N function
  • From: Carl Woll <carlw at wolfram.com>
  • Date: Tue, 22 May 2007 02:59:37 -0400 (EDT)
  • References: <f2me6h$lu4$1@smc.vnet.net> <f2orbi$6vd$1@smc.vnet.net> <200705211002.GAA10093@smc.vnet.net>

Szabolcs wrote:

>The OP probably uses Thunderbird, and he copied and pasted the 
>expressions from his first message. Thunderbird has the stupid habit to 
>display the 2 in x^2 as a superscript. When you copy it, it will be 
>copied as x2, not x^2 (and unfortunately nobody cares to fix this bug).
>
>So 640320^3 got turned into 6403203.
>
>Pay attention to this if you use Thunderbird and you are copying 
>Mathematica code from e-mail messages ... it bit me more than once.
>  
>
If you can live without emoticons, you can go to

Tools | Options | Display

and uncheck the option

Display emoticons as graphics

Then, copying x^2 will work.

Carl Woll
Wolfram Research

>Szabolcs
>
>Jens-Peer Kuska wrote:
>  
>
>>Hi,
>>
>>Mathematica 5.2 and 6.0 say
>>
>>2.625374126343655*10^17
>>
>>and so I don't know what you mean ..
>>
>>Regards
>>   Jens
>>
>>kkwweett wrote:
>>    
>>
>>>Good morning Mathematica users,
>>>
>>>
>>>Can anyone tell me, please, which of a),b) or c) is wrong :
>>>
>>>a)
>>><MathematicaHelp>
>>><quote>
>>>
>>>N[expr] is equivalent to N[expr, MachinePrecision].
>>>
>>></quote>
>>></MathematicaHelp>
>>>
>>>b)
>>>In[1]:=N[Exp[Sqrt[163 ]Pi] - 6403203]
>>>Out[1]=256.
>>>
>>>
>>>c)
>>>In[2]:=N[Exp[Sqrt[163 ]Pi] - 6403203,$MachinePrecision]
>>>Out[2]=743.9999999999993
>>>
>>>?
>>>
>>>Thank you
>>>
>>>      
>>>



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