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

Re: irrational and real exponents

• To: mathgroup at smc.vnet.net
• Subject: [mg98111] Re: irrational and real exponents
• From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
• Date: Mon, 30 Mar 2009 05:06:15 -0500 (EST)
• Organization: Uni Leipzig
• References: <gqq3ql$7m7$1@smc.vnet.net>
• Reply-to: kuska at informatik.uni-leipzig.de

Hi,

Mathematica will never truncate anything. This mean
I^2 is evaluated to -1 and E^(-2 Pi I) is evaluated to 1

Regards
   Jens

congruentialuminaire at yahoo.com wrote:
> Hello MathGroup:
> 
> Originally I was confused also about imaginary exponents also but help
> cleared that up.
> 
> Help for Power also has this sentence: "For certain special arguments,
> Power automatically evaluates to exact values."
> 
> Does this imply that for irrational and real exponents, they are
> "truncated" to rationals before they are evaluated?
> 
> Thanks in advance for any info on this.
> 
> Roger Williams
> Franklin Laboratory
>