Services & ResourcesWolfram ForumsMathGroup Archive

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

Re: (-1)^(1/2.) on Mathematica!

• To: mathgroup at smc.vnet.net
• Subject: [mg107548] Re: (-1)^(1/2.) on Mathematica!
• From: ben <benjamin.friedrich at gmail.com>
• Date: Tue, 16 Feb 2010 03:55:20 -0500 (EST)
• References: <hlb8qi$rm5$1@smc.vnet.net>

Hi,

It's fine on Mathematica 6.0, maybe the trouble is that
(-1)^(1/2) has two solutions: "I" and "-I".

Ben

On Feb 15, 12:48 pm, Legendre <sinankap... at gmail.com> wrote:
> Hi,
>
> I tried the expression (-1)^(1/2.) on Mathematica 7.0, I got 6.12323*10^(-17) + 1. i. By using //N there is no problem. But using 2. it gives a wrong answer.
>
> Sinan

• Follow-Ups:
  • Re: Re: (-1)^(1/2.) on Mathematica!
    • From: Murray Eisenberg <murray@math.umass.edu>