- To: mathgroup at smc.vnet.net
- Subject: [mg122203] Simplifying radicals
- From: Tom De Vries <tidetabletom at gmail.com>
- Date: Thu, 20 Oct 2011 07:44:43 -0400 (EDT)
- Delivered-to: firstname.lastname@example.org
Hi, I'm working with some introductory topics in radicals.
I know that Mathematica assumes things about the domain used in
problems, so the principal cube root of a negative number will be
complex... or something like that..
I'm way down at the lower high school level simply working with cube
roots of negative numbers and wanting a negative number result.
I know there are ways of using assumptions and solving over the reals, etc.
Is there any EASY way I can simply ask for the cube root of -729 and get -9?
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