|   | 1 |  initial version  | 
The way Sage uses Maxima, it already sets the domain to be complex by default.
So you don't have to do anything. You would have to make special efforts if you wanted the domain to be real.
 Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.
 
                
                Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.