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Re: usage of TrigToExp?

• To: mathgroup at smc.vnet.net
• Subject: [mg95455] Re: usage of TrigToExp?
• From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
• Date: Mon, 19 Jan 2009 02:56:58 -0500 (EST)
• References: <gkv0a9$de1$1@smc.vnet.net>

Hi,

in some of your init.m files you load probably
the RealOnly.m package
http://library.wolfram.com/infocenter/MathSource/6771/
and this cause the problem.

Remove it and all work as expected. Your system
behave not as a clean Mathematica.

Regards
   Jens

zatuch wrote:
> Hello,
> Results from function TrigToExp seemed weird to me. Could anyone
> please give me a good explanation on its usage. Thanks a lot.
> 
> In[41]:= TrigToExp[Cos[2 x]]
> During evaluation of In[41]:= Nonreal::warning: Nonreal number
> encountered.
> Out[41]= Nonreal
> 
> In[43]:= TrigToExp[Cos[y] Sin[x]]
> Out[43]= 0
> 
> Zatuch
>