What does +- mean?

*To*: mathgroup at smc.vnet.net*Subject*: [mg47519] What does +- mean?*From*: Lautaro Vergara <lvergara at lauca.usach.cl>*Date*: Thu, 15 Apr 2004 03:39:29 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Hi, I have found (v. 5.0) an extrange thing: when one expands, e.g., Series[Sqrt[-1/2+x^2],{x,0,4}] there appear a +- sign (which is correctly not present when one changes -1/2 by -1) is this a bug or a feature? Thanks L. Vergara

**Follow-Ups**:**Re: What does +- mean?***From:*Oleksandr Pavlyk <pavlyk@phys.psu.edu>

**Re: What does +- mean?***From:*Andrzej Kozlowski <akoz@mimuw.edu.pl>