MathGroup Archive 2000

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: How do I force Log[Exp[x]]=x


Try:

PowerExpand[Log[Exp[x]]]

Works for me.

Regards,

Dimiter Petsev

Bart Killam <sasrbk at unx.sas.com> wrote in message
news:87tp95$5ia at smc.vnet.net...
>
>   For real x, Log[Exp[x]]=x. For general complex x
> Mathematical leaves this expression unevaluated. I
> have tried Log[Exp[x/;Im[x]=0]], but this give a result
> of 0.
>
>   How do I tell Mathematica that I want the expression
> simplied for real x ? Thanks for any help.
> --
> Bart Killam                            Work:  919-677-8000 x7538
> SAS Institute Inc.                     Fax:   919-677-8123
> SAS Campus Dr., R5115                  Email: sasrbk at unx.sas.com
> Cary NC 27513-8000
>




  • Prev by Date: Re: EPS Bounding Box
  • Next by Date: Re: EPS Bounding Box
  • Previous by thread: Re: How do I force Log[Exp[x]]=x
  • Next by thread: Re: How do I force Log[Exp[x]]=x