Re: a simplification problem
- To: mathgroup at smc.vnet.net
- Subject: [mg55257] Re: a simplification problem
- From: Bill Rowe <readnewsciv at earthlink.net>
- Date: Thu, 17 Mar 2005 03:30:56 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
On 3/16/05 at 5:35 AM, fangh73 at xmu.edu.cn (Hui Fang) wrote:
>My questions is simple: How do I simplify (-1)^(1/3) to -1?
On one level the answer is you don't since
{(-1)^3,(1/2 + I Sqrt[3]/2)^3,(1/2 - I Sqrt[3]/2)^3}//Simplify
gives
{-1, -1, -1}
But if you want to force Mathematica to get a real cube root of a negative number, load the package Miscellaneous`RealOnly`
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